Karthus

Upon dying, Karthus enters a spirit form that allows him to continue casting spells.

Creates a delayed blast, after 0.5 seconds, deals 40/60/80/100/120 (+30% AP) magic damage to each nearby enemy, this deals double damage if it hits only a single unit.

Creates a wall at target location that lasts for 5 seconds. Enemies that pass through the wall have their Magic Resist reduced by 15% and Slowed by 40/50/60/70/80% for 5 seconds (their Movement Speed gradually recovers over the duration).

Toggle Off: When Karthus kills a unit, he restores 20/27/34/41/48 Mana. Toggle On: Deal 30/50/70/90/110 (+20% AP) magic damage to nearby enemies each second.

After channeling for 3 seconds, Karthus deals 250/400/550 (+60% AP) magic damage to all enemy champions.