Grenzo, Dungeon Warden, Epitaph Golem, Priest of Urabrask, and Ashnod's Altar

Prerequisites

• Grenzo, Dungeon Warden on the battlefield
• Epitaph Golem on the battlefield
• Priest of Urabrask on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Priest of Urabrask, adding
2. Activate Epitaph Golem by paying , putting Priest of Urabrask on the bottom of your library from your graveyard
3. Activate Grenzo by paying , putting Priest of Urabrask into your graveyard from the bottom of your library, and then putting it onto the battlefield
4. When Priest of Urabrask enters the battlefield, it triggers, adding
5. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite red mana
• Infinite sacrifice triggers