Some ideas

Some silly ideas, apologies if these are too similar to alternate examples.

(Item) Passive: Every consecutive skill shot after the third does increases the amount of AP (% Based) Active: Empower the next skill shot to provide true sight and movement speed.

(Mastery) Periodically gain a diminishing shield (% of health) (Can trigger when being attacked)

(Summoner Spell) Increases the duration of a buff for an ally or a debuff for an enemy.

_Thank you for reading! _