Mikaeus, the Unhallowed + Cauldron of Souls + Dross Scorpion + Krark-Clan Ironworks

Mikaeus, the Unhallowed

Cauldron of Souls

Dross Scorpion

Krark-Clan Ironworks

How it works

1. Activate Cauldron of Souls by tapping it, giving Dross Scorpion persist until end of turn.
2. Activate Krark-Clan Ironworks by sacrificing Dross Scorpion, adding CC.
3. Dross Scorpion dies, triggering its ability, its undying ability and its persist ability.
4. Resolve the first Dross Scorpion trigger, untapping Cauldron of Souls.
5. Resolve the Dross Scorpion persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. Activate Krark-Clan Ironworks by sacrificing Dross Scorpion, adding CC.
7. Dross Scorpion dies, triggering its ability and its undying ability.
8. Resolve the first Dross Scorpion trigger, untapping Cauldron of Souls.
9. Resolve the second Dross Scorpion trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
10. Activate Krark-Clan Ironworks by sacrificing Dross Scorpion, adding CC.
11. Dross Scorpion dies, triggering its ability and its persist ability.
12. Repeat from step 4.