Slimefoot and Squee | Pitiless Plunderer | Phyrexian Altar

Cards

Activate
Phyrexian Altar twice by sacrificing another nontoken creature you control and
Slimefoot and Squee, adding ({B} magic symbol) ({R} magic symbol) .
When the creatures die,
Pitiless Plunderer triggers twice, creating two Treasure tokens.
Activate the two Treasures by tapping and sacrificing them, adding ({1} magic symbol) ({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.
When the Saproling dies,
Pitiless Plunderer triggers, creating a Treasure token.
Resolve the
Slimefoot and Squee ability, returning it and another creature from your graveyard to the battlefield.
When
Slimefoot and Squee enter the battlefield, it triggers, creating a 1/1 Saproling creature token.
Repeat.