Cloudstone Curio + Miirym, Sentinel Wyrm + Phyrexian Altar + Slumbering Dragon

Mana needed: {R}

GUR identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Slumbering Dragon by paying {R}.
  2. Slumbering Dragon enters the battlefield, triggering Cloudstone Curio and Miirym.
  3. Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand from the battlefield.
  4. Resolve the Miirym trigger, creating a token copy of Slumbering Dragon.
  5. The Slumbering Dragon token enters the battlefield, triggering Cloudstone Curio, returning the nontoken Slumbering Dragon from the battlefield to your hand.
  6. Activate Phyrexian Altar by sacrificing the Slumbering Dragon token, adding {R}.
  7. Repeat.

What the combo produces