Iryx, Superior Phalanx

Flying, Indestructible
As long as your devotion to Red, Green, and Blue is less than 10, Iryx is not a creature
Whenever a dragon you control attacks, create a copy of it that is tapped and attacking. Remove the token at the end of combat
Whenever a creature attacks Iryx, create a copy of it, and switch the copy for the real one. Remove the copy at the end of combat