Requires

Brokkos, Apex of Forever must be on the battlefield. Infested Thrinax must be in hand. Pitiless Plunderer must be on the battlefield. Altar of Dementia must be on the battlefield. Mana needed:

Steps

1. Cast Infested Thrinax by paying .
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 Altar of Dementia by sacrificing Brokkos.
4. When Brokkos dies, Infested Thrinax and Pitiless Plunderer trigger.
5. Resolve the Infested Thrinax trigger, creating six 1/1 Saproling creature tokens.
6. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
7. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Brokkos's power.
8. Activate Altar of Dementia four times by sacrificing four Saprolings.
9. When the Saprolings die, Pitiless Plunderer triggers four times, creating four Treasure tokens.
10. Resolve the Altar of Dementia abilities, causing target player to mill cards equal to the Saprolings' power.
11. Activate five Treasures by tapping and sacrificing them, adding .
12. Cast Brokkos from your graveyard for its mutate cost by paying , putting it on top of a Saproling.
13. Repeat from step 3.

Results