Detonation Orb

90 Ability Power 12 Magic Penetration 600 Mana 20 Ability Haste The Bomb Ability damage marks the target, storing 20% of the damage dealt (increased to 25% against Immobilized enemies). 3 seconds after you last damage the target with an ability, detonate the stored damage on them. If at any point the damage is enough to kill the target, detonate immediately.