Use Mana Drain in lane to refill your own mana and empty the enemy support's pool.

Land Earth Spike to lock targets, the stun hits a small area and sets up kills.

Hex the enemy carry in fights, the disable is long and swings the teamfight.

Keep Finger of Death ready to secure kills, the cooldown resets when it kills someone.

Buy Blink Dagger to initiate and instantly hex the highest value enemy hero.

Drain the biggest mana pools with Mana Drain before casting Finger, your damage spikes.

Stay in the backline, your disables and burst matter more than your positioning risks.