Grenzo, Dungeon Warden + Ashnod's Altar + Arashin Sovereign

Grenzo, Dungeon Warden

Ashnod's Altar

Arashin Sovereign

How it works

1. Activate Ashnod's Altar by sacrificing Arashin Sovereign, adding CC.
2. When Arashin Sovereign dies, it triggers, causing you to put it on the bottom of your library from your graveyard.
3. Activate Grenzo by paying 2, putting Arashin Sovereign into your graveyard from the bottom of your library, and then putting it onto the battlefield.
4. Repeat.

This loop turns a simple mana source and a bottom-decking dragon into a self-sustaining engine. Ashnod's Altar provides the colorless mana needed to fund Grenzo, Dungeon Warden's ability while simultaneously clearing away Arashin Sovereign by sending it to the graveyard. When Arashin Sovereign dies, its own triggered ability allows you to place it back on the bottom of your library, perfectly positioning it for Grenzo, Dungeon Warden to pull it straight back onto the battlefield.