Every third attack on the same enemy deals a percentage of their maximum Health, reduces their Armor, and grants Vi Attack Speed.
1
Vault Breaker
Vi charges her gauntlets and unleashes a vault shattering punch, carrying her forward. Enemies she hits are knocked back and receive a stack of Denting Blows.
2
BLAST SHIELD
Vi gains stacks of Blast Shield when hitting an enemy with an attack or ability. Activating Blast Shield generates a shield that absorbs damage. At maximum stacks, Vi also gains Movement Speed.
3
Relentless Force
Vi's next attack blasts through her target, dealing damage to enemies behind it.
Ult
Cease and Desist
Vi runs down an enemy, knocking aside anyone in the way. When she reaches her target she knocks it into the air, jumps after it, and slams it back into the ground.
Ability descriptions from the official Wild Rift website.
This page is for League of Legends: Wild Rift (the mobile game), not League of Legends on PC. A Japanese version with guides and matchup notes is available: 日本語版.