Altar of Dementia + Mikaeus, the Unhallowed + River Kelpie

UB identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Altar of Dementia by sacrificing River Kelpie.
  2. When River Kelpie dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. When River Kelpie enters, its first ability triggers, causing you to draw a card.
  4. Resolve the Altar of Dementia ability.
  5. Activate Altar of Dementia by sacrificing River Kelpie.
  6. When River Kelpie dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  7. When River Kelpie enters, its first ability triggers, causing you to draw a card.
  8. Resolve the Altar of Dementia ability.
  9. Repeat.

What the combo produces