Resolve the Blood Artist trigger, causing target opponent to lose 1 life and you to gain 1 life.
Resolve the Junji trigger, returning Slimefoot and Squee to the battlefield from your graveyard and causing you to lose 2 life.
When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding ({G} magic symbol) .
When Slimefoot and Squee dies, Blood Artist triggers, causing target opponent to lose 1 life and you to gain 1 life.
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 Junji to the battlefield from your graveyard.
When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
Activate Phyrexian Altar by sacrificing the Saproling, adding ({1} magic symbol) .
When the Saproling dies, Blood Artist triggers, causing target opponent to lose 1 life and you to gain 1 life.