Matchup
Build vs Zac
Build adapted to this matchup
Starting items
Core build
Standard
Summoner spells
97%
2%Anti AD
Anti Heal
Anti AP
Anti Heal
Anti Tank
DPS
Precision
Conqueror
Triumph
Legend: Haste
Last Stand
Inspiration
Jack Of All Trades
Cash Back
Power Spikes
Strength by game phase
Riven
ZacZac's abilities
Passive, spells and ultimate
Each time Zac hits an enemy with an ability, he sheds a chunk of himself that can be reabsorbed to restore Health. Upon taking fatal damage, Zac splits into 4 bloblets that attempt to recombine. If any bloblets remain, he will revive with an amount of Health depending on the Health of the surviving bloblets. Each bloblet has a percentage of Zac's maximum Health, Armor and Magic Resistance. This ability has a 5 minute cooldown.
Cooldowns
Cooldowns by spell rank
| Level | Q | W | E | R |
|---|---|---|---|---|
| 3 | 14s | 5s | 22s | – |
| 6 | 11s | 5s | 22s | 2m |
| 9 | 8s | 5s | 22s | 2m |
| 11 | 8s | 5s | 22s | 1m45 |
| 16 | 8s | 5s | 16s | 1m30 |
| 18 | 8s | 5s | 10s | 1m30 |
Playing against Zac
How to counter and exploit weaknesses
Walk on his blobs (passive) to destroy them and prevent him from healing.
His E is long range but visible and has a windup: side-step when you see him charging.
If Zac dies, he splits into blobs that reform: kill all 4 blobs to kill him for good.
His engage is strong but he's vulnerable to burst once inside — focus him after his engage.
Source: op.gg + LTL Engine · Patch 16.9.1 · May 8, 2026