Brokkos, Apex of Forever + Infested Thrinax + Pitiless Plunderer + Ashnod's Altar

Brokkos, Apex of Forever

Infested Thrinax

Pitiless Plunderer

Ashnod's Altar

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 Ashnod's Altar by sacrificing Brokkos, adding CC.
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. Activate Ashnod's Altar twice by sacrificing two Saprolings, adding CCCC.
8. When the Saprolings die, Pitiless Plunderer triggers twice, creating two Treasure tokens.
9. Activate three Treasures by tapping and sacrificing them, adding U/B.
10. Cast Brokkos from your graveyard for its mutate cost by paying 2U/B, putting it on top of a Saproling.
11. Repeat from step 3.