Hogaak, Arisen Necropolis + Infested Thrinax + Yahenni, Undying Partisan

Hogaak, Arisen Necropolis

Infested Thrinax

Yahenni, Undying Partisan

How it works

1. Cast Infested Thrinax by paying 3.
2. When Infested Thrinax enters the battlefield, it triggers, causing you to create a number of 1/1 Saproling creature tokens when a nontoken creature you control dies.
3. Activate Yahenni by sacrificing Hogaak.
4. When Hogaak dies, Infested Thrinax triggers, creating eight 1/1 Saproling creature tokens.
5. Resolve the Yahenni ability.
6. Cast Hogaak from your graveyard by tapping seven Saprolings.
7. Repeat from step 3.

This clever loop turns Hogaak, Arisen Necropolis's alternative casting restrictions into an engine, allowing you to cast it repeatedly from the graveyard without spending a drop of mana. The secret sauce is Infested Thrinax, whose flash and entry trigger turn the death of each nontoken creature into a flood of Saproling tokens matching that creature's power. By using Yahenni, Undying Partisan to sacrifice Hogaak, you trigger that massive token generation, providing the exact bodies needed to convoke Hogaak right back from your graveyard for free.