Grenzo, Dungeon Warden, Threefold Thunderhulk, Ashnod's Altar, and Tomb Trawler

Prerequisites

• Grenzo, Dungeon Warden on the battlefield
• Threefold Thunderhulk on the battlefield
• Ashnod's Altar on the battlefield
• Tomb Trawler on the battlefield
• available

Steps

1. Activate Tomb Trawler by paying , putting Threefold Thunderhulk on the bottom of your library from your graveyard
2. Activate Grenzo by paying , putting Threefold Thunderhulk into your graveyard from the bottom of your library, and then putting it onto the battlefield
3. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens
4. Activate Ashnod's Altar three times by sacrificing Threefold Thunderhulk and two Gnomes, adding six
5. Repeat

Results

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