Ashnod's Altar + Evolution Witness + Reyhan, Last of the Abzan

BG identity

Commander legal

The 3 combo pieces

What must be in place

You have enough mana to cast the creature with MV<=2 if it doesn't have {X} in its mana cost, or enough to cast it with X=1 otherwise.

How to execute it

  1. Cast the creature with MV<=2 by paying its mana cost if it doesn't have {X} in its mana cost, or by paying enough mana where X=1 otherwise, causing the creature to enter the battlefield with a +1/+1 counter on it.
  2. Activate Ashnod's Altar by sacrificing the creature, adding {C}{C}.
  3. When the creature dies, Reyhan triggers, putting a +1/+1 counter on Evolution Witness.
  4. Evolution Witness triggers, returning the creature from your graveyard to your hand.
  5. Repeat.
  6. If the creature can be cast for {C} or less, this combo nets infinite colorless mana, and you may cast that creature for an arbitrarily large amount of mana if it has {X} in its mana cost.

What the combo produces