Decay steals strength from enemies, so spam it to get tanky while weakening them.

Tombstone spawns zombies to attack and slow, so place it to zone and win fights.

Soul Rip heals allies or damages enemies, so use it to save or finish.

Flesh Golem amplifies damage to nearby enemies, so activate it in teamfights.

Undying wins the lane by out sustaining, so trade aggressively early.

He falls off late, so push your lane advantage to end the game early.