Published on 2026-05-17 for Patch 26.9, ARAM Mayhem Giant Slayer vs Infernal Conduit comes down to one question: do you need damage that deletes frontliners faster, or a spell engine that keeps paying off across a long fight? Riot Games' 26.9 patch notes and the in-client ARAM Mayhem tooltip are the source of truth for exact values, while the champion examples and lobby patterns below line up with current player consensus on op.gg, u.gg, lolalytics, League of Graphs, Mobalytics, aramayhem.com, Reddit r/ARAM, and ARAM Discord discussions.
What each augment actually does in 26.9
ARAM Mayhem changes the value of augments because fights are not a straight copy of ordinary ARAM. The mode amplifies whichever augment converts your champion's damage pattern into real kill pressure first. Giant Slayer is the anti-health choice. Infernal Conduit is the spell-chain choice. That simple split matters more here than in any normal ARAM lobby.
Giant Slayer: the anti-frontline tool
Giant Slayer wins when the enemy team starts stacking health and refuses to die on schedule. In 26.9, its strength is tied to hitting champions with a bigger health pool, so every bonus-health purchase turns your damage into a better trade. That makes the augment especially punishing into tanks, bruisers, and enchanter frontlines that buy HP to survive the first engage. Riot's tooltip is the final authority, but the practical takeaway is clear: if the enemy frontline gets thicker, Giant Slayer gets better.
Example: a Kog'Maw or Kai'Sa hitting an Ornn or Dr. Mundo with Giant Slayer turns each auto or on-hit proc into meaningful progress instead of chip damage. When the target already has layered HP and resistances, Infernal Conduit cannot match that raw anti-health conversion unless the fight drags on long enough for several spell rotations.
Infernal Conduit: the repeated-cast engine
Infernal Conduit shines when a champion can keep casting and keep connecting. The trigger is not about one perfect burst window; it is about repeated spell pressure inside the same fight. The more often a champion can fire a second or third spell cycle, the more Conduit turns a clean opener into a sustained threat. In ARAM Mayhem, that matters for poke mages, battle mages, and AP burst champions that can re-enter the fight without dying instantly.
Example: Brand, Viktor, and Cassiopeia all gain more from Infernal Conduit because each fight creates a chain of spell hits rather than a single all-in. If Brand lands W+E and keeps the enemy in range for another round of burn, Conduit compounds that pressure. If the same fight ends after one spell rotation, the augment's value drops fast.
Which one wins by enemy composition
Against a tank-heavy lineup, Giant Slayer is the best augment against tanks in ARAM Mayhem, and it is not close. A draft with two durable frontliners, one scaling bruiser, and a support who can protect them gives Giant Slayer a clear job: cut through health bars before the fight resets. A Sion, Maokai, and Alistar front line is exactly the kind of lobby where Giant Slayer pays for itself in the first serious engage.
Against a squishy, kiting, sustained-output lineup, Infernal Conduit gets the edge. When the enemy team is built around range, shields, and movement rather than raw HP, your damage needs to keep coming instead of overcommitting to anti-tank stats that have little to chew through. A poke shell like Xerath, Jinx, Karma, and Lux gives Conduit room to matter because every extra spell cycle punishes the space they are trying to create.
One useful shorthand: if the enemy team survives by being thick, pick Giant Slayer. If the enemy team survives by staying away, pick Infernal Conduit. That rule stays stable in live 26.9 lobbies and matches the way high-level ARAM Mayhem players describe the two augments on community Discords and r/ARAM.
Which champion types want each augment
Auto-attack carries and mixed-damage champions lean Giant Slayer first. Kog'Maw, Varus on-hit, Kai'Sa, and similar damage profiles gain more from anti-health conversion because their output comes from repeated hits rather than a single spell chain. A mixed-damage champion is especially happy with Giant Slayer when the enemy draft contains a real front line, because physical and magic packets both become better at cracking the same target.
Example: Kai'Sa into an Ornn-and-Sejuani front line gets more value from Giant Slayer than from a spell-focused augment, because the fight will be won by shredding the closest body instead of fishing for a perfect burst window. The same logic applies to on-hit Varus: when the target is a health stacker, the augment makes every arrow and proc count harder.
AP burst and AP siege champions lean Infernal Conduit when they can keep moving the fight forward with repeated casts. Lux, Syndra, Ziggs, Brand, Viktor, and Cassiopeia all benefit when the first ability hit creates a second and third follow-up. That is why Infernal Conduit ARAM Mayhem best uses are on champions that can re-engage with spells even after the first trade ends.
Example: Lux landing Q-E-R on a low-health backline does not need Giant Slayer to win the fight; what it needs is the ability to keep cycling spells while the enemy scrambles. Conduit gives that repeated threat. By contrast, a burst mage staring at three frontliners with stacked HP rarely gets enough payoff from Conduit because the kill target does not disappear fast enough.
For AP burst specifically, the rule is simple: if the champion can land a second rotation in the same skirmish, Infernal Conduit is the better choice. If the champion only gets one clean burst window and the enemy has real health bars, Giant Slayer becomes the safer pick only when the kit also includes meaningful repeated damage or mixed follow-up.
Fight tempo: early, mid, and late value
Early fights in ARAM Mayhem are usually decided by the first clean rotation. That is where Infernal Conduit often feels better on spell-centric champions, because one quick cast sequence into another can snowball an uneven trade. If the enemy already has an early HP stacker, Giant Slayer can still win the lane of the fight immediately, but on low-health targets it needs the lobby to grow before it reaches full value.
Mid game is the pivot point. Health purchases start appearing, and teams begin to cluster around one or two true frontline bodies. That is the stage where Giant Slayer climbs fastest into "best augment against tanks in ARAM Mayhem" territory. Infernal Conduit still performs, but only when the enemy comp gives enough room for repeated spell loops and retargeting.
Late game is where the split becomes obvious. Giant Slayer keeps scaling with the enemy's health stack, so it stays relevant against full-build tanks and bruisers. Infernal Conduit stays strong when the enemy team is still light and mobile, because the augment rewards the ability to keep casting rather than the ability to burn down one giant HP bar. In a full late-game fight against Ornn, Cho'Gath, and a peel support, Giant Slayer is the clearer winner. In a late poke war against four ranged champions, Conduit carries the better ceiling.
New players' 3 most common mistakes
1. Picking Infernal Conduit into a double-frontline lobby. The fix is direct: if the enemy draft shows two durable frontliners or one tank plus one sustain bruiser, lock Giant Slayer. A Brand or Ziggs can still function with Conduit there, but the fight will ask for tank damage first, not extra spell cadence.
2. Taking Giant Slayer on a champion that wins through repeated spell pressure. The fix is to check the damage pattern, not the highlight clip. If the champion's real value comes from casting twice, zoning twice, or reapplying burn twice, Infernal Conduit creates more pressure. A Viktor that wants to keep a fight inside Gravity Field gets more from Conduit than from anti-health stats when the enemy is mostly paper.
3. Choosing by "burst fantasy" instead of lobby shape. The fix is to count real targets, not imagined ones. If one combo ends the fight and the enemy has no HP stackers, Infernal Conduit is the safe spell-scaling choice. If the first target is a tank and the fight keeps going, Giant Slayer becomes the cleaner answer. That rule removes the usual "pick it because it feels strong" mistake that shows up in low-communication ARAM Mayhem games.
Direct selection rules
Pick Giant Slayer immediately when the enemy team has two or more HP buyers, when one frontline champion is clearly the engage anchor, or when your own team lacks reliable tank shred. A Kog'Maw, Kai'Sa, Varus, or mixed-damage carry gets immediate value in that lobby shape. The more often the enemy is forced to stand in front and soak hits, the more Giant Slayer wins the augment comparison.
Pick Infernal Conduit immediately when your champion can cast twice in the same fight, when the enemy team is mostly low-health ranged champions, or when the lobby is built around kiting and poke. Brand, Viktor, Lux, Cassiopeia, and Ziggs get the cleanest returns there. If the fight will be decided by repeated spell cycles rather than by chopping down a single giant health bar, Conduit is the sharper choice.
Quick rule for mixed-damage champions: against tanks, Giant Slayer; against paper, Infernal Conduit. Mixed damage does not change the decision. It only changes how hard the winner snowballs once it is chosen.
FAQ
Is Giant Slayer always the better anti-tank augment? Against real frontlines, yes. In ARAM Mayhem 26.9, Giant Slayer is the more direct answer to stacked health and layered frontline purchases. Infernal Conduit only beats it when the enemy front line is thin and the fight turns into repeated spell trading.
Can Infernal Conduit ever outperform Giant Slayer into tanks? Only when the champion is a spell engine and the tank line never fully closes the distance. A poke mage that lands three or four clean spell cycles from safety can keep Conduit relevant, but once the fight becomes a face-to-face frontline brawl, Giant Slayer pulls ahead.
What is the safest choice on a first-pick AP champion? Infernal Conduit is the safer blind choice for spell-driven AP champions because it performs against both poke and extended fights. The moment the lobby reveals heavy HP stacking, Giant Slayer becomes the better anti-frontline answer.
Does mixed damage make Giant Slayer mandatory? No. Mixed damage only increases the value of whichever augment matches the lobby. Mixed damage into tanks wants Giant Slayer. Mixed damage into a squishy kite comp wants Infernal Conduit if the champion can keep casting and repositioning.
What is the fastest way to stop guessing? Look at the first three enemy picks. If two of them are obvious frontliners, lock Giant Slayer. If all three are low-health champions or ranged kites, lock Infernal Conduit. That one check removes most bad ARAM Mayhem augment choices before the game even starts.