Slobad, Iron Goblin + Spine of Ish Sah + Clock of Omens + Encroaching Mycosynth + Traxos, Scourge of Kroog

Slobad, Iron Goblin

Spine of Ish Sah

Clock of Omens

Encroaching Mycosynth

Traxos, Scourge of Kroog

How it works

1. Activate Slobad by tapping it and sacrificing Spine of Ish Sah, adding 7 that can only be spent to cast artifact spells or to activate abilities of artifacts.
2. Spine of Ish Sah leaves the battlefield, returning itself from your graveyard to your hand.
3. Cast Spine of Ish Sah by paying 7.
4. Traxos triggers, untapping itself.
5. Spine of Ish Sah enters the battlefield, destroying target permanent.
6. Activate Clock of Omens by tapping Traxos and Spine of Ish Sah, untapping Slobad.
7. Repeat.