Kodama of the East Tree either from your hand or from the command zone by paying ({4} magic symbol) ({G} magic symbol) ({G} magic symbol) plus commander tax, if applicable.
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
Oboro, Palace in the Clouds.
Both
Kodama of the East Trees trigger.
In response, activate
Oboro's first ability by tapping it, adding ({U} magic symbol) .
Activate
Oboro's last ability by paying ({1} magic symbol) , returning it from the battlefield to your hand.
Resolve the token
Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
Resolve the nontoken
Kodama of the East Tree trigger, putting
Oboro, Palace in the Clouds from your hand onto the battlefield.
The token
Kodama of the East Tree triggers.
In response, activate
Oboro's first ability by tapping it, adding ({U} magic symbol) .
Activate
Oboro's last ability by paying ({1} magic symbol) , returning it from the battlefield to your hand.
Resolve the token
Kodama of the East Tree trigger, putting
Oboro, Palace in the Clouds from your hand onto the battlefield.