Slimefoot and Squee | Pitiless Plunderer | Goldspan Dragon

(and one other card)

Activate
Altar of Dementia twice by sacrificing a nontoken creature you control and
Slimefoot and Squee.
When the creatures die,
Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
Resolve the
Altar of Dementia abilities, causing target player to mill cards equal to the sacrificed creatures' powers.
Activate the Treasures by tapping and sacrificing them, adding two of ({B} magic symbol) ({B} magic symbol) , ({R} magic symbol) ({R} magic symbol) or ({G} 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 artifact 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.
Activate the Treasure by tapping and sacrificing it, adding ({B} magic symbol) ({B} magic symbol) .
Repeat.