Quicksilver

Protective state where the unit ignores incoming crowd control (stuns, slows, knock-ups) for a duration. Card text calls it Unstoppable. The unit can still be targeted and damaged. Distinct from Untargetable (cannot be hit) and Invulnerable (takes no damage).

Bonus Attack Speed makes a unit attack more often per second, which means more auto-attack damage and faster mana generation toward the next ability cast. Some carries scale beyond that — their ability itself fires more hits when they have more Attack Speed (e.g., the number of swipes in Aphelios's onslaught). Stacking AS items and traits on these units compounds: faster autos, faster casts, and bigger casts.

The carrier ramps power within a single round — Titan's Resolve gains AD/AP per attack or hit taken, and the Rapidfire trait builds stacking Attack Speed on every attack, up to a cap. All in-combat stacks reset when the round ends, unlike takedown-stacking which carries across rounds.