Agatha's Soul Cauldron + Tannuk, Steadfast Second Combos

3 known combos featuring both cards in Commander

Near-infinite ETB Near-infinite LTB Near-infinite death triggers Infinite ETB Infinite tapped creature tokens

Combo 1 with Grumgully, the Generous + Krenko, Mob Boss

Results: Infinite ETB · Infinite tapped creature tokens
Steps
  1. Activate a creature with a +1/+1 counter on it, creating a 1/1 red Goblin creature token.
  2. The 1/1 Goblin token enters with a +1/+1 counter on it due to Grumgully's ability.
  3. Repeat.

Combo 2 with Shadow the Hedgehog + Workhorse + Pack Rat

Results: Infinite self-discard triggers · Near-infinite ETB · Infinite draw triggers · Near-infinite LTB · Infinite rummaging · Near-infinite death triggers · Near-infinite colorless mana
Show steps
  1. Activate Workhorse using Pack Rat's ability by paying {3} and discarding a card, creating a token copy of it that will enter with four +1/+1 counters on it.
  2. Activate the Workhorse token four times by removing four +1/+1 counters from it, adding {C}{C}{C}{C}.
  3. The Workhorse token dies as a state-based action due to having 0 toughness, triggering Shadow, causing you to draw a card.
  4. Repeat.

Combo 3 with Wight of the Reliquary + Bloodghast + Insidious Roots

Results: Near-infinite +1/+1 counters on Plants you control · Near-infinite ETB · Near-infinite LTB · Near-infinite death triggers · Near-infinite landfall triggers · Near-infinite sacrifice triggers · Near-infinite tapped creature tokens · Put all lands from your library onto the battlefield tapped
Show steps
  1. Activate a creature you control that has a +1/+1 counter on it by tapping it and sacrificing Bloodghast, searching your library for a land card and putting it onto the battlefield tapped.
  2. When the land enters, Bloodghast triggers, returning itself from your graveyard to the battlefield tapped.
  3. Insidious Roots triggers, creating a 0/1 Plant creature token and then putting a +1/+1 counter on each Plant you control.
  4. Repeat using the Plant instead until no lands are in your library.
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