Engage and Initiation
Zac lives for the hard engage. In Mayhem, your cooldowns are short enough that you don't need to wait for the perfect moment. Look for a Stretching Strike into Elastic Slingshot channel whenever the enemy backline steps slightly out of position. You want to land on the squishiest target, but don't tunnel vision if they are too safe. Bouncing on a frontline with Let's Bounce! still creates chaos and knocks up multiple people, setting up your teammates for easy damage.
Always start charging your slingshot from inside a bush or just outside vision range. The channel time gives enemies a small window to react, so you need the element of surprise. If you hit a four-man knockup, you have done your job even if you die immediately. Your passive, Cell Division, means trading your life for two or three enemy deaths is almost always a win for your team.
Narrow-Lane Spacing
The single lane is a playground for Zac. Your Stretching Strike has a deceptively long range and can grab enemies through minions. In the early game, use the width of the lane to poke. If the enemy clumps up near their tower, a charged slingshot becomes nearly impossible to dodge because they have nowhere to sidestep.
When you are defending, hug the side walls. This forces enemies to choose between diving deep into your side or giving up the angle. If they try to siege, you can often slingshot over the wall from the side brush to bypass their frontline entirely. Use the geometry of the map to create angles they cannot cover with vision.
Snowball Timing
Mark/Dash is your backup engage and your escape tool. Do not waste it for minor poke. The best use is to mark a target that has used their mobility or crowd control, then dash in and immediately cast Elastic Slingshot while they are briefly locked down by the Snowball stun. This guarantees a full charge knockup.
If you are low on health and need to collect blobs, you can Snowball to a distant enemy or minion to pull yourself away from danger, giving your passive time to heal you. In a desperate dive, Snowball onto the primary target, pop your ultimate, and watch them get knocked back into your team.
Counter-Engage and Escape
Zac is excellent at disrupting enemy engages. If a diver jumps on your carries, save your Elastic Slingshot or use Let's Bounce! to peel. The constant knockups make it very hard for assassins to stick to your teammates. If you see a Nautilus or Malphite charging in, charging your own slingshot to intercept them mid-flight can completely neutralize their initiation.
Escaping is tricky because Zac is slow. If you get caught deep, use Let's Bounce! to push enemies away and create distance. While they are knocked back, look for a slingshot angle over a wall. In Mayhem, the reduced cooldowns mean you might have slingshot up again by the time your ultimate ends, giving you a second chance to jump out.
Target Priority
Your job is not to kill; it is to disrupt. Aim for the enemy carry or the biggest threat, but be realistic. If the enemy ADC has a peel support, diving them might just get you kited to death. Instead, look for the mage or the support who lacks mobility. If you can isolate them with your ultimate, your team can collapse.
When your team has a lead, switch to a "catch" mindset. Use your slingshot to snipe stragglers who overextend for farm. In a losing scenario, focus on peeling for your own damage dealers. A Zac that sits on his ADC and knocks up every diver is often more valuable than a Zac that dies trying to reach the enemy backline.
Augment Trigger Windows
Many augments in Mayhem trigger on ability hit or crowd control. Zac is one of the best champions to exploit these because his kit hits multiple times. Your Let's Bounce! triggers on-hit effects for every bounce, and your passive blobs can also interact with certain augments. If you have an augment that grants healing or damage on crowd control, try to layer your abilities. Hit them with Stretching Strike, then slingshot, then ultimate. This maximizes the number of triggers.
Watch for augments that reduce cooldowns. Zac becomes a perpetual knockup machine if you can get his slingshot cooldown low enough. In this state, you can engage, disengage, and re-engage in the same fight. Always check your augment bonuses at the start of the game and adjust your aggression level based on how much extra power you have.
Push/Pull Rhythm
Control the wave by collecting your blobs. When you poke with Stretching Strike, the blobs spawn near the enemy. Walking up to collect them pushes the wave naturally. If you want to freeze or reset, let the blobs sit or collect them safely under your tower. In Mayhem, the wave clear is fast, so you often end up shoving naturally.
Use this rhythm to set up dives. Shove the wave under their tower, then threaten a slingshot charge. The enemy has to choose between clearing the wave and dodging your engage. This pressure creates openings for your team to poke them down or force a bad fight under the turret.
Dive Timing
Diving with Zac requires you to go first. Your passive is your insurance policy. If you die, you split into blobs that can often survive if the enemy is too busy dealing with your teammates. When diving, charge your slingshot from outside the tower range and land on the enemy while they are near their turret. Pop your ultimate immediately to knock them further back or into the wall, forcing them to take extra tower shots.
Communicate with your team. If you go in and your team hesitates, you will die for nothing. Make sure your damage dealers are in range to follow up before you commit. If the dive goes wrong, try to move your blob chunks toward safety during the revive animation.
Behind-State Damage Control
When you are behind, Zac shifts from an engager to a peeler. Do not try to make hero plays by diving their backline. You will get blown up before you land. Instead, stand in front of your carries and use Stretching Strike to slow anyone who approaches. Save your slingshot to interrupt key enemy abilities or to knock up divers.
Focus on survival and blob collection. Every bit of health you recover is a resource for your team. If you see a fight breaking out, look for a flank angle, but wait for the enemy to commit their cooldowns before you go in. A well-timed counter-engage ultimate can turn a losing fight into a stalemate or even a win. Your value in a losing game is your ability to disrupt and stall, not your damage.
