Add "now applies on-hit effects" on abilities to break champions

E: Twin Fang ACTIVE: Cassiopeia launches her fangs at the target enemy, dealing them 52 - 120 (based on level) (+ 10% AP) magic damage. If Twin Fang kills its target, it refunds its mana cost. Applies on-hit effects. If the target is poisoned, Twin Fang deals bonus magic damage and heals Cassiopeia for 5 - 22 (based on level) (+ 10% AP).

Q: Infected Cleaver ACTIVE: Dr. Mundo hurls a cleaver in the target direction, dealing magic damage to the first enemy it hits and slowing it by 40% for 2 seconds. Half of the cost is refunded if Infected Cleaver hits an enemy, the full cost is refunded if it kills an enemy. Applies on-hit effects.

P: Garden of Thorns Casting Deadly Spines or Grasping Roots causes Seeds to bloom into Plants, which last for 5 - 7.5 (based on level) seconds, have 4 - 6 health, and deal 24 - 109 (based on level) (+ 15% AP) magic damage per attack. Plants apply on-hit effects. Plants beyond the first deal 「 12 - 54.5 (based on level) (+ 7.5% AP) 」 when attacking a single target, and also apply on-hit effects multiple times.

Q: Dance of Arrows ACTIVE: Lamb dashes in the target direction and fires up to three homing arrows on arrival upon the three nearest targets, dealing physical damage to each. Lamb's current attack target at any proximity will be prioritized by one of the arrows. Each arrow applies on-hit effects.