Cappa Juice

Scales with Ability Power (AP). Champions and effects flagged as AP-scaling get bigger damage, healing, or shield values when the holder stacks AP from items like Jeweled Gauntlet, Rabadon's Deathcap, and Nashor's Tooth, or from trait bonuses.

Scales with Attack Damage (AD). Champions and effects flagged as AD-scaling get bigger auto-attack and ability damage when the holder stacks AD from items like Deathblade, Infinity Edge, Giant Slayer, and Bloodthirster, or from trait bonuses.

Effect fires when a unit secures a kill or assist. An assist counts, so a unit that only contributed damage still triggers it.

Effect fires when the unit itself is killed, commonly on items that bank value during combat (see damage-storage) and discharge it as a final payload.

The carrier gains a permanent stack on each takedown (kill or assist) and keeps those stacks across rounds, unlike in-combat stacking which resets — so early-round farming compounds into late-game power.