Acererak the Archlich + Bontu's Monument + Gwenna, Eyes of Gaea

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 {1}{B}.
  3. Bontu's Monument triggers, causing each opponent to lose 1 life and you to gain 1 life.
  4. Gwenna triggers, putting a +1/+1 counter on it and untapping it.
  5. When Acererak enters the battlefield, its first ability triggers, returning itself from the battlefield to your hand and causing you to venture into Lost Mine of Phandelver.
  6. Repeat.

What the combo produces