Acererak the Archlich + Gwenna, Eyes of Gaea + Heartless Summoning

BG identity

Commander legal

The 3 combo pieces

What must be in place

You have not completed nor are currently venturing in Tomb of Annihilation.
Gwenna does not have summoning sickness.

How to execute it

  1. Activate Gwenna by tapping it, adding {1}{B} that can only be spent to cast creature spells or activate abilities of creatures.
  2. Cast Acererak by paying {B}.
  3. Gwenna triggers, putting a +1/+1 counter on it and untapping it.
  4. Acererak enters the battlefield, returning itself from the battlefield to your hand and causing you to venture into Lost Mine of Phandelver.
  5. Repeat.

What the combo produces