Nim Deathmantle + Ashnod's Altar + Prosperous Innkeeper + Mondrak, Glory Dominus

Nim Deathmantle

Ashnod's Altar

Prosperous Innkeeper

Mondrak, Glory Dominus

How it works

1. Activate Ashnod's Altar by sacrificing Prosperous Innkeeper, adding CC.
2. When Prosperous Innkeeper dies, Nim Deathmantle triggers, causing you to pay 4 to return Prosperous Innkeeper from your graveyard to the battlefield, and attach Nim Deathmantle to it.
3. When Prosperous Innkeeper enters the battlefield, it triggers, creating two Treasure artifact tokens.
4. Activate the Treasures by tapping and sacrificing them, adding 2.
5. Repeat.

This crafty loop turns a simple halfling innkeeper into an endless engine of life and artifacts. By sacrificing Prosperous Innkeeper to Ashnod's Altar, you generate the two colorless mana you need while sending the Innkeeper to the graveyard, which triggers Nim Deathmantle to resurrect it for four mana. Thanks to the amplification of Mondrak, Glory Dominus, that returning Innkeeper floods your board with a double dose of Treasure tokens to sacrifice right back into Ashnod's Altar for the necessary resurrection fee, leaving you with infinite life and sacrifice triggers to spare.