Boneyard Scourge + Molten Echoes + Phyrexian Altar

Prerequisites

• You control at least one additional Dragon.
• "Dragon" chosen with Molten Echoes.

Steps

1. 1Activate Phyrexian Altar by sacrificing Boneyard Scourge, adding .
2. 2Activate Phyrexian Altar by sacrificing another Dragon, adding .
3. 3When the Dragon dies, Boneyard Scourge triggers, causing you to pay to return it from your graveyard to the battlefield.
4. 4When Boneyard Scourge enters the battlefield, Molten Echoes triggers, creating a token copy of Boneyard Scourge with haste.
5. 5Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers