Cast Kodama of the East Tree by paying ({4} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Holding priority, cast Double Major by paying ({G} magic symbol) ({U} magic symbol) , copying the Kodama of the East Tree spell, with the copy not being legendary.
Resolve both Kodama of the East Tree spells.
Play Rakdos Carnarium.
Both Kodama of the East Trees and Rakdos Carnarium trigger.
Resolve the token Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
Resolve the Rakdos Carnarium trigger, returning it to your hand from the battlefield.
Resolve the nontoken Kodama of the East Tree trigger, putting Rakdos Carnarium from your hand onto the battlefield.
The token Kodama of the East Tree and Rakdos Carnarium trigger.
Resolve the Rakdos Carnarium trigger, returning it to your hand from the battlefield.
Resolve the token Kodama of the East Tree trigger, putting Rakdos Carnarium from your hand onto the battlefield.
The nontoken Kodama of the East Tree and Rakdos Carnarium trigger.