Ulamog's Dreadsire + Thornbite Staff + Goblin Bombardment

Ulamog's Dreadsire

Thornbite Staff

Goblin Bombardment

How it works

1. Activate Ulamog's Dreadsire by tapping it, creating a 10/10 Eldrazi creature tokens.
2. Activate Goblin Bombardment by sacrificing the Eldrazi token.
3. When the Eldrazi token dies, Ulamog's Dreadsire triggers, untapping Ulamog's Dreadsire.
4. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
5. Repeat.

By outfitting Ulamog's Dreadsire with Thornbite Staff, you grant it the ability to ping targets and, crucially, a trigger that untaps it whenever any creature dies. That automated untap loop is fueled entirely by Goblin Bombardment, which provides the sacrifice outlet needed to repeatedly send the massive 10/10 tokens created by Ulamog's Dreadsire straight to the graveyard. Each iteration of sacrificing the token to deal damage triggers Thornbite Staff to ready Ulamog's Dreadsire for another tap, closing the loop into an endless sequence of destruction.