Ashaya, Soul of the Wild + Celestial Dawn + Emeria Shepherd + Phyrexian Altar

Prerequisites

• You have a creature card in hand with the mana to cast it.
• You have a creature card in your graveyard.

Steps

1. 1Cast any creature by paying its mana cost.
2. 2When the creature enters as a Plains due to Ashaya and Emeria Shepherd, Emeria Shepherd triggers.
3. 3Holding priority, activate Phyrexian Altar by sacrificing the creature cast in step 1.
4. 4Resolve the Emeria Shepherd trigger, returning another creature from your graveyard to the battlefield.
5. 5Repeat from step 2.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers
• Return all creature cards from your graveyard to the battlefield