Vohar, Vodalian Desecrator + Haunted One + Cauldron of Souls + Deceiver Exarch + Altar of Dementia

Prerequisites

• Vohar is your commander and does not have summoning sickness.
• Deceiver Exarch does not have a +1/+1 counter on it.

Steps

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

Effects

• Infinite card draw
• Infinite draw triggers
• Infinite looting
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mill
• Near-infinite power for certain creatures until end of turn
• Near-infinite sacrifice triggers