Elvish Piper + Intruder Alarm + Phyrexian Altar + Enduring Renewal

Prerequisites

• Elvish Piper does not have summoning sickness.
• You have a creature card in hand.

Steps

1. 1Activate Elvish Piper by paying and tapping it, putting any creature card from your hand onto the battlefield.
2. 2The creature enters the battlefield, triggering Intruder Alarm, untapping all creatures.
3. 3Activate Phyrexian Altar by sacrificing the creature, adding .
4. 4The creature dies, triggering Enduring Renewal, returning the creature from your graveyard to your hand.
5. 5Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures