Opponents control at least three artifacts and/or enchantments.
You control at least one Saproling.
({1} magic symbol) , plus either ({B} magic symbol) , ({R} magic symbol) or ({G} magic symbol) available available.
Steps
Activate Phyrexian Altar twice by sacrificing Dockside Extortionist 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 Dockside Extortionist from your graveyard to the battlefield.
When Dockside Extortionist and Slimefoot and Squee enter the battlefield, their abilities trigger.
Resolve the Dockside Extortionist trigger, creating at least three Treasure tokens.
Resolve the Slimefoot and Squee trigger, creating a 1/1 Saproling creature token.
Activate two Treasures by tapping and sacrificing them, adding ({B} magic symbol) ({R} magic symbol) .