Cloudstone Curio + Thousand-Faced Shadow Combos

4 known combos featuring both cards in Commander

Infinite ETB Infinite LTB Infinite mana lands you control can produce Infinite red mana Infinite tapped creature tokens that are attacking

Combo 1 with Peregrine Drake

Also requires: Peregrine Drake Peregrine Drake
Results: Infinite ETB · Infinite LTB · Infinite mana lands you control can produce
Steps
  1. Declare Peregrine Drake and any other creature as attackers.
  2. When they are unblocked, activate up to five lands you control by tapping them, adding at least {3}{U}{U}.
  3. Activate Thousand-Faced Shadow's ninjutsu ability by paying {2}{U}{U} and returning the other attacking creature to your hand, putting Thousand-Faced Shadow from your hand onto the battlefield tapped and attacking.
  4. Thousand-Faced Shadow enters the battlefield, triggering itself and Cloudstone Curio.
  5. Resolve the Cloudstone Curio trigger, choosing not to return anything from the battlefield to your hand.
  6. Resolve the Thousand-Faced Shadow trigger, creating a token copy of Peregrine Drake.
  7. The token Peregrine Drake enters the battlefield, triggering itself and Cloudstone Curio.
  8. Resolve the Peregrine Drake trigger, untapping up to five lands you control.
  9. Resolve the Cloudstone Curio trigger, returning Thousand-Faced Shadow from the battlefield to your hand.
  10. Repeat from step 2.

Combo 2 with Palinchron

Also requires: Palinchron Palinchron
Results: Infinite ETB · Infinite LTB · Infinite mana lands you control can produce
Show steps
  1. Declare Palinchron and any other creature as attackers.
  2. When they are unblocked, activate up to seven lands you control by tapping them, adding at least {3}{U}{U}.
  3. Activate Thousand-Faced Shadow's ninjutsu ability by paying {2}{U}{U} and returning the other attacking creature to your hand, putting Thousand-Faced Shadow from your hand onto the battlefield tapped and attacking.
  4. Thousand-Faced Shadow enters the battlefield, triggering itself and Cloudstone Curio.
  5. Resolve the Cloudstone Curio trigger, choosing not to return anything from the battlefield to your hand.
  6. Resolve the Thousand-Faced Shadow trigger, creating a token copy of Palinchron.
  7. The token Palinchron enters the battlefield, triggering itself and Cloudstone Curio.
  8. Resolve the Palinchron trigger, untapping up to seven lands you control.
  9. Resolve the Cloudstone Curio trigger, returning Thousand-Faced Shadow from the battlefield to your hand.
  10. Repeat from step 2.

Combo 3 with Great Whale

Also requires: Great Whale Great Whale
Results: Infinite ETB · Infinite LTB · Infinite mana lands you control can produce
Show steps
  1. Declare Great Whale and any other creature as attackers.
  2. When they are unblocked, activate up to seven lands you control by tapping them, adding at least {3}{U}{U}.
  3. Activate Thousand-Faced Shadow's ninjutsu ability by paying {2}{U}{U} and returning the other attacking creature to your hand, putting Thousand-Faced Shadow from your hand onto the battlefield tapped and attacking.
  4. Thousand-Faced Shadow enters the battlefield, triggering itself and Cloudstone Curio.
  5. Resolve the Cloudstone Curio trigger, choosing not to return anything from the battlefield to your hand.
  6. Resolve the Thousand-Faced Shadow trigger, creating a token copy of Great Whale.
  7. The token Great Whale enters the battlefield, triggering itself and Cloudstone Curio.
  8. Resolve the Great Whale trigger, untapping up to seven lands you control.
  9. Resolve the Cloudstone Curio trigger, returning Thousand-Faced Shadow from the battlefield to your hand.
  10. Repeat from step 2.

Combo 4 with Arni Metalbrow + Priest of Urabrask

Results: Infinite ETB · Infinite LTB · Infinite red mana · Infinite tapped creature tokens that are attacking
Show steps
  1. Declare Priest of Urabrask as an attacker.
  2. Arni Metalbrow triggers, causing you to pay {1}{R} to put Thousand-Faced Shadow from your hand onto the battlefield tapped and attacking.
  3. When Thousand-Faced Shadow enters the battlefield, it, Arni Metalbrow and Cloudstone Curio trigger.
  4. Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
  5. Resolve the Arni Metalbrow trigger, choosing not to pay.
  6. Resolve the Thousand-Faced Shadow trigger, creating a token copy of Priest of Urabrask that enters the battlefield tapped and attacking.
  7. When the Priest of Urabrask token enters the battlefield, it, Arni Metalbrow and Cloudstone Curio trigger.
  8. Resolve the Priest of Urabrask trigger, adding {R}{R}{R}.
  9. Resolve the Cloudstone Curio trigger, returning Thousand-Faced Shadow to your hand from the battlefield.
  10. Resolve the Arni Metalbrow trigger, causing you to pay {1}{R} to put Thousand-Faced Shadow from your hand onto the battlefield tapped and attacking.
  11. Repeat from step 3.
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