Hullbreaker

3000
2100 (70%)
40 attack damage
500 health
4% move speed
Passive
Unique – Skipper: Basic attacks on-hit against any enemy grant a stack for 10 seconds, stacking up to 5 times. At maximum stacks, or 4 stacks, your next basic attack against a champion, epic monster, or structure consumes all stacks to deal (120% / 84%) base AD (+ (5% / 3.5%) maximum health) bonus physical damage, increased to (300% / 210%) base AD (+ (10% / 7%) maximum health) against structures.
Unique – Boarding Party: Allied siege minions and super minions within 1050 units gain (70 − 130 / 35 − 65) (based on level) bonus armor and bonus magic resistance, as well as 10% increased size.
Limitations
Limited to 1 Hullbreaker.