Vohar, Vodalian Desecrator + Haunted One + Cauldron of Souls + Deceiver Exarch + Bloodflow Connoisseur

Vohar, Vodalian Desecrator

Haunted One

Cauldron of Souls

Deceiver Exarch

Bloodflow Connoisseur

How it works

1. Activate Vohar's first ability by tapping it.
2. Vohar triggers, giving creatures you control that share a creature type with it +2/+0 and undying until end of turn.
3. Resolve the Vohar ability from step 1, causing you to loot.
4. Activate Bloodflow Connoisseur by sacrificing Deceiver Exarch.
5. When Deceiver Exarch dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. When Deceiver Exarch enters the battlefield, it triggers, untapping Cauldron of Souls.
7. Resolve the Bloodflow Connoisseur ability from step 4, putting a +1/+1 counter on it.
8. Activate Cauldron of Souls by tapping it, giving Deceiver Exarch persist until end of turn.
9. Activate Bloodflow Connoisseur by sacrificing Deceiver Exarch.
10. When Deceiver Exarch dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
11. When Deceiver Exarch enters the battlefield, it triggers, untapping Vohar.
12. Resolve the Bloodflow Connoisseur ability from step 9, putting a +1/+1 counter on it.
13. Repeat.

This clever loop turns Vohar, Vodalian Desecrator into a tap-activated engine by leveraging Haunted One, which grants your commander's creature type undying whenever it taps. By alternating between Haunted One's undying trigger and Cauldron of Souls's granting of persist, you can repeatedly sacrifice Deceiver Exarch to Bloodflow Connoisseur and bring it right back to the battlefield. Each time Deceiver Exarch returns, its entry trigger untaps either Cauldron of Souls or Vohar, Vodalian Desecrator, letting you endlessly tap and untap your pieces to loot through your library while growing Bloodflow Connoisseur into a massive threat.