Slimefoot and Squee | Phyrexian Altar | Siege-Gang Commander

Cards

All permanents on the battlefield.
You control at least one Saproling.
({1} magic symbol) , plus either ({B} magic symbol) , ({R} magic symbol) or ({G} magic symbol) available available.

Activate
Phyrexian Altar twice by sacrificing
Siege-Gang Commander and
Slimefoot and Squee, adding two mana in any combination of ({B} magic symbol) , ({R} magic symbol) or ({G} magic symbol) .
Activate
Slimefoot and Squee by paying ({1} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) and sacrificing a Saproling, returning it and
Siege-Gang Commander from your graveyard to the battlefield.
When
Siege-Gang Commander and
Slimefoot and Squee enter the battlefield, their abilities trigger.
Resolve the
Slimefoot and Squee trigger, creating a 1/1 Saproling creature token.
Resolve the
Siege-Gang Commander trigger, creating three 1/1 Goblin creature tokens.
Activate
Phyrexian Altar four times by sacrificing two Goblins,
Siege-Gang Commander and
Slimefoot and Squee, adding ({1} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) .
Repeat from step 2.
Once you have infinite mana and infinite Goblins, you may activate
Siege-Gang Commander's ability infinitely to deal infinite damage to any target(s).