First Cast:Vichannels for up to 4 seconds, increasing Vault Breaker'srange, speed, and damage over 1.25 seconds. Vi can still move while channeling but is slowed by 15% as well as both disarmed and silenced.
Bonus Physical Damage:4 / 5.5 / 7 / 8.5 / 10% 「 (+ 1% per 35 bonus AD) 」「 (+ 2.86% per 100 bonus AD) 」 of target's maximum health
Applying 3 stacks on the same target consumes them all to deal bonus physical damage (capped at 300 against non-champions) grant Vibonus attack speed for 4 seconds, and have the target's armor reduced by 20% for the same duration.
The enhanced attack applies other on-hit effects, can critically strike as normal (the bonus damage cannot) apply life steal, and affect structures if they are the primary target (the cone's damage does not affect them)