Resolve both Slimefoot abilities, creating two 1/1 Saproling creature tokens.
Activate Ashnod's Altar twice by sacrificing both Saproling tokens, adding CCCC.
Slimefoot triggers twice, dealing 2 damage to each opponent and causing you to gain two life.
Repeat.
This cunning loop turns Slimefoot, the Stowaway into an engine of continuous drain by capitalizing on the equipment's uncanny multiplying power. Equipping Illusionist's Bracers to Slimefoot ensures that every time you pay to activate its token-creation ability, the Bracers copy it to generate two Saprolings instead of one. You then feed those freshly minted tokens into Ashnod's Altar to harvest the exact amount of colorless mana needed to fund the next activation, leaving extra mana left over while Slimefoot's natural death trigger drains your opponents and pads your life total with every cycle.