Dual Nature, Faerie Impostor, and Phyrexian Altar

Prerequisites

• Dual Nature on the battlefield
• Faerie Impostor in hand
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Faerie Impostor by paying
2. Faerie Impostor and Dual Nature's first ability trigger
3. Resolve the Dual Nature ability, creating a token copy of Faerie Impostor
4. The Faerie Impostor token triggers, returning the nontoken Faerie Impostor from the battlefield to your hand
5. Dual Nature's second ability triggers
6. In response, sacrifice the token Faerie Impostor to Phyrexian Altar for
7. Resolve the Dual Nature ability, exiling zero creatures
8. Resolve the Faerie Impostor ability, returning a creature you control from the battlefield to your hand if desired
9. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count
• Return any number of creatures you control to your hand