Great Oak Guardian + Tawnos, Solemn Survivor Combos

2 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite death triggers Infinite self-mill

Combo 1 with Krark-Clan Ironworks

Also requires: Krark-Clan Ironworks Krark-Clan Ironworks
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite self-mill · Infinite untap of creatures you control · Infinite mana creatures you control can produce · Infinitely large creatures you control until end of turn
Steps
  1. Activate Tawnos's second ability by paying {1}{W}{U}{B}, tapping it and sacrificing two artifact tokens, exiling Great Oak Guardian from your graveyard and creating a token copy of it that is an artifact in addition to its other types.
  2. When the Great Oak Guardian token enters, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn.
  3. Activate Tawnos's first ability by paying {2} and tapping it, creating a copy of the Great Oak Guardian token and causing you to mill two cards.
  4. When the Great Oak Guardian token enters, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn.
  5. Activate Krark-Clan Ironworks by sacrificing a Great Oak Guardian token, adding {C}{C}.
  6. Repeat from step 3.

Combo 2 with Ashnod's Altar

Also requires: Ashnod's Altar Ashnod's Altar
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite self-mill · Infinite untap of creatures you control · Infinite mana creatures you control can produce · Infinitely large creatures you control until end of turn
Show steps
  1. Activate Tawnos's second ability by paying {1}{W}{U}{B}, tapping it and sacrificing two artifact tokens, exiling Great Oak Guardian from your graveyard and creating a token copy of it that is an artifact in addition to its other types.
  2. When the Great Oak Guardian token enters, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn.
  3. Activate Tawnos's first ability by paying {2} and tapping it, creating a copy of the Great Oak Guardian token and causing you to mill two cards.
  4. When the Great Oak Guardian token enters, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn.
  5. Activate Ashnod's Altar by sacrificing a Great Oak Guardian token, adding {C}{C}.
  6. Repeat from step 3.
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