Published on May 17, 2026, for ARAM Mayhem 26.9: Sion is one of the most annoying frontliners in this mode because the 26.9 Riot client tooltips and LoL Wiki champion data confirm his kit still combines permanent health scaling, charged crowd control, Unstoppable Onslaught engage, and Glory in Death after he dies.

Sion is not just "a tank" in ARAM Mayhem. In standard ARAM, killing him usually ends the problem for a few seconds. In ARAM Mayhem, faster fights, stronger augment spikes, and repeated 5v5 clumps make his corpse, knockups, and zone control far more punishing. A bad teamfight against Sion often follows the same pattern: he charges Q from fog, lands R through the lane, dies in the middle of the backline, then his passive forces carries to burn Flash, cleanse tools, or defensive augments while his teammates finish the fight.

The best Sion counters in ARAM Mayhem are not random high-damage champions. The strongest answers fall into four groups: percent-health damage, long-duration ADC damage, kite mages that punish his movement path, and hard-control champions that deny his setup before he reaches the backline. The goal is simple: 1 step sideways before Q finishes, 2 seconds of focused percent-health damage, 1 slow or wall after his R impact, and 0 free passive hits on carries .

Why Sion Becomes Stronger in ARAM Mayhem Than in Regular ARAM

Sion's strength starts with health. According to Riot's in-client champion tooltip and LoL Wiki's 26.9 Sion page, Soul Furnace grants permanent maximum health when Sion kills units and larger rewards from champion takedowns. On Howling Abyss, even without farming side lanes, takedown-heavy brawls let Sion stack meaningful bonus durability. In ARAM Mayhem, that scaling matters more because augment-enhanced fights create longer front-to-back exchanges where a high-health champion gets repeated chances to absorb cooldowns.

The second issue is his engage. Decimating Smash is a charged area knockup, and LoL Wiki's 26.9 ability data notes that the effect becomes stronger the longer Sion charges it. In Mayhem, players group tightly around health relics, portals, wave crashes, and objective-style brawl points, so one fog-of-war Q can hit two or three champions. A practical example: move 450 units sideways the moment Sion begins Q, then punish him during the release animation; the result is 1 missed knockup and 3 seconds where Sion has no reliable peel tool .

The third reason is Glory in Death. Riot's client tooltip confirms Sion revives briefly after dying, rapidly loses health, gains attack speed, and can keep attacking. In Mayhem, augments that increase movement speed, slows, healing, shields, or sustained combat can make this passive feel like a second engage. The correct response is not panic. Ping the corpse once, walk back for 2 seconds, apply 1 slow, then resume hitting him after his passive health decay has done most of the work . That sequence removes his passive value without donating a carry kill.

Best Sion Counter Picks ARAM Mayhem 26.9

Vayne is the cleanest anti-Sion carry because Silver Bolts deals true damage based on maximum health, as listed in Riot's champion tooltip and LoL Wiki's 26.9 ability data. She punishes exactly what Sion buys: health. In ARAM Mayhem, Vayne also benefits from short-lane wall angles because Condemn can pin Sion after he misses Q or after R collides with terrain. The execution pattern is direct: tumble sideways before Q, land 3 autos for Silver Bolts, Condemn after he walks forward; the result is percent-health damage without giving him a melee passive reset . For players searching for the best champions vs tank Sion ARAM, Vayne is the first name to check.

Kog'Maw is the best long-range shredder when protected. Bio-Arcane Barrage adds percent maximum-health magic damage, confirmed by Riot client and LoL Wiki 26.9 data, so Sion's health stacking becomes a liability. In ARAM Mayhem, Kog'Maw should not stand in the center lane line. Use the side wall. Activate W, fire 5 autos from max range, then retreat one champion-length before Sion Q completes; the result is sustained anti-tank damage while forcing Sion to waste engage tools on empty ground . He is one of the most reliable ARAM Mayhem anti tank champions when the team has at least one peel support or control mage.

Brand punishes Sion because his passive and burn items convert Sion's huge health bar into teamfight damage. Riot's tooltip lists Blaze as a stacking burn that can detonate, and item data in the 26.9 client confirms Liandry-style burn effects remain strong into high-health targets. The Mayhem-specific value is splash pressure: Sion usually walks in front of four teammates. Cast W on Sion's entry path, Q only after Blaze is applied, then R when Sion's team steps forward; the result is one stunned frontline and burn spread onto the backline .

Varus is a strong Sion counter because he can choose poke, on-hit, or hybrid anti-tank setups, but in ARAM Mayhem 26.9 the on-hit or Blight-focused version is the most reliable into tank Sion. LoL Wiki's 26.9 Varus data confirms Blight stacks can be detonated by his abilities for maximum-health magic damage. The Mayhem combo is simple: apply 3 autos, detonate with E for grievous-zone control, then hold R until Sion commits R or Q; the result is percent-health burst plus a root chain that stops his teammates from following .

Cassiopeia beats Sion by making the lane painful to cross. Her sustained Twin Fang damage, poison requirement, and Miasma grounding zone are all listed in Riot and LoL Wiki champion data. Grounding does not cancel Sion's unstoppable ultimate once it is already moving, but it does punish his approach before the cast and blocks many follow-up movement tools from his team. Place W between Sion and your ADC, land Q as he exits the slow, then cast 4 Twin Fangs; the result is a forced retreat or a dead tank before he gets passive value .

Anivia is one of the most practical kite mages into Sion because Crystallize creates terrain. LoL Wiki's 26.9 Anivia data confirms the wall is terrain, and Sion's ultimate ends when he collides with terrain according to Sion's ability data. That interaction is huge in ARAM Mayhem because the bridge is narrow. Drop wall diagonally 1 body-length in front of Sion's R path, cast Q where he stops, then place R under his feet; the result is a forced crash, stun threat, and slow field before he reaches carries . This is one of the few answers that directly changes how to beat Sion in ARAM Mayhem rather than simply out-damaging him.

Poppy is not picked to "delete" Sion. She is picked to deny the chaos after he enters. Riot's tooltip confirms Steadfast Presence blocks dashes around Poppy, while Keeper's Verdict can remove enemies from a fight. Sion's Unstoppable Onslaught itself should be treated as unstoppable during the charge, but Poppy can shut down the follow-up from Sion's allies and punish his Q/passive path. Stand 300 units behind the frontliner, press W as enemy divers follow Sion, then charge R for the knock-away; the result is Sion isolated from the damage dealers who need to capitalize on his engage .

Item and Augment Priorities Against Tank Sion

Anti-tank items matter more in Mayhem because Sion often reaches durability thresholds before carries finish full builds in a normal rhythm. For ADCs, prioritize percent-health or armor-penetration routes. Vayne wants attack speed and survivability after her core damage, while Kog'Maw and Varus should value on-hit effects and penetration. Buy one anti-tank component before a luxury crit item, hit Sion for 6 seconds during his failed engage, and the result is a frontline that cannot re-enter before the next wave .

For mages, burn and anti-healing choices are the highest-value answers when Sion has healing augments, shielding support, or drain-tank items. Brand with burn damage and Cassiopeia with sustained poison pressure both punish health stacking. If Sion's team has enchanters, add shield or heal reduction early. Apply grievous wounds before Sion's passive begins, kite for 2 seconds, then reapply damage as he decays; the result is no passive cleanup kill and less healing from support follow-up .

For ARAM Mayhem augments, prioritize three categories in this order: sustained damage, slow or spacing control, and defensive anti-burst. Damage augments that reward repeated hits are excellent on Vayne, Kog'Maw, Varus, and Cassiopeia because Sion cannot dodge every tick once he has committed. Slow-based or movement-control augments are better than raw burst into him because they also handle Glory in Death. Take 1 sustained-output augment, 1 spacing augment, and 1 defensive tool; the result is enough damage to kill Sion once and enough control to survive him after death .

How to Beat Sion in ARAM Mayhem Fights

The most important rule is to stop giving Sion full-value Q. His Q is dangerous because players walk backward in a straight line. That keeps them inside the rectangle. The better movement is sideways. When Sion starts charging Q, move perpendicular for 0.75 seconds, then attack during his recovery; the result is a missed knockup and a free damage window . Champions like Vayne, Varus, and Cassiopeia gain huge value from this because they can immediately punish him without walking into melee range.

Against Sion R, do not stack five champions in the center lane. A single central formation gives him a clean bowling lane. Anivia should hold wall until the ultimate path is clear, not panic-wall the minion wave. Poppy should save cooldowns for the team behind Sion, not waste W expecting it to cancel an unstoppable charge. Split carries by 500 units left and right, force Sion to choose one angle, then collapse after impact; the result is one threatened target instead of a full-team knockup chain .

Handling his passive is where most ARAM Mayhem teams throw won fights. The corpse looks harmless for half a second, then deletes a low-health carry. The right call is disciplined spacing. After Sion dies, every ranged champion takes 2 steps back, one player applies a slow, and nobody flashes forward for cleanup; the result is his passive expires without a kill, turning a 5v5 win into a safe push . If Vayne has Condemn, save it for passive Sion unless the living Sion is about to land a lethal Q. If Anivia has wall, cut off the corpse path rather than blocking allied escape routes.

New Players' 3 Most Common Mistakes Against Sion

Mistake 1: Burning every cooldown into Sion before he commits

Throwing all damage into a full-health Sion while his team stands untouched lets him do his job. The fix is target sequencing. Use 1 poke spell to mark him, hold 2 key cooldowns for his Q or R entry, then burst when he cannot retreat; the result is damage that lands during his weakest timing instead of padding numbers into shields . Brand holding Q for stun after Blaze is a clear example.

Mistake 2: Treating Sion's death as the end of the fight

Glory in Death is part of his threat budget. In ARAM Mayhem, where augments can amplify movement or combat uptime, passive Sion often deals more practical damage than living Sion. The fix is a corpse protocol. Ping once, slow once, step back twice; the result is zero passive hits on carries . Kog'Maw and Varus should never stand still to finish passive Sion unless a frontline body-blocks the path.

Mistake 3: Picking burst-only champions into full tank Sion

One rotation rarely kills Mayhem Sion through health scaling, shields, and defensive augments. The fix is drafting at least two sustained damage sources. Pair one percent-health champion with one control mage, such as Vayne plus Anivia or Kog'Maw plus Brand; the result is Sion loses health while also losing the path he needs to engage . That pairing is far more reliable than five poke champions who cannot stop his R angle.

FAQ: Sion Counter Picks ARAM Mayhem 26.9

Who is the single best Sion counter in ARAM Mayhem 26.9?

Vayne is the best single answer because Silver Bolts deals maximum-health true damage according to Riot's client tooltip and LoL Wiki 26.9 data. Land 3 autos after dodging Q, then Condemn Sion away from the backline; the result is tank-shred damage plus peel in one champion slot .

Is Anivia really a Sion counter?

Yes. Anivia counters Sion's engage path, not his health bar. Crystallize creates terrain, and Sion's ultimate stops on terrain collision according to LoL Wiki 26.9 mechanics. Wall the R path diagonally, stun the crash point, and place ultimate under him; the result is a failed engage that turns into a trapped tank .

Should Poppy use W to stop Sion ultimate?

No. Treat Sion R as unstoppable during the charge. Poppy's job is to block follow-up dashes, punish his Q positioning, and remove his teammates with Keeper's Verdict. Press W when divers follow Sion, then R the nearest damage dealer away; the result is Sion isolated without backup .

What is the best team setup against tank Sion?

The most reliable setup is 1 percent-health carry, 1 control mage, 1 peel champion, and 2 flexible damage or utility picks. An example is Vayne, Brand, Anivia, Poppy, and Varus. Use Anivia wall for R, Poppy for follow-up denial, and Vayne or Varus for sustained damage; the result is controlled space and enough damage to kill Sion twice through passive .

Which long-tail counter category matters most?

For players searching Sion counter picks ARAM Mayhem 26.9, the highest-value category is sustained percent-health damage. Burst can win one trade, but percent-health damage wins repeated Mayhem fights. Draft Vayne or Kog'Maw, add one slow source, and kite passive Sion for 2 seconds; the result is a dead tank with no cleanup kill .

Action Plan for the Next Sion Game

Draft Vayne, Kog'Maw, Brand, Varus, Cassiopeia, Anivia, or Poppy when Sion appears. Build anti-tank damage before luxury burst. Save one control spell for Q recovery, R impact, or passive movement. Keep carries split across the bridge instead of stacked in the center. The winning formula is practical: 1 anti-tank carry, 1 terrain or hard-control tool, 1 slow for passive, and disciplined sideways movement . That turns Sion from a Mayhem raid boss into a predictable engage champion with clear punish windows.

Primary sources checked for mechanics and version context: Riot Games League of Legends client champion tooltips and item tooltips for Patch 26.9; Riot Games official patch notes on leagueoflegends.com; LoL Wiki 26.9 champion pages for Sion, Vayne, Kog'Maw, Brand, Varus, Cassiopeia, Anivia, and Poppy; ARAM Mayhem 26.9 rules and mode context from aramayhem.com; current champion trend references from Lolalytics, u.gg, OP.GG, League of Graphs, and Mobalytics 26.9 ARAM pages.