Im fairly sure its too slow and too expensive, but again, this is a tempo game
Three mana to copy a creature
Final Fantasy X: Tidus, Yuna's Guardian and Sin, Spira's Punishment Tidus starts out as a mere blitzball player, the sport of the world of Spira, being the star of the Zanarkand Abes
Birds of Paradise is the ultimate mana dork, representing color fixing for one mana, and the added utility of having a flyer just in case you want to, I dont know, strap an aura or sword on it
after casting Class, the Goblin persists back to the battlefield with a -1/-1 and a +1/+1 counter that cancel each other out so you can sacrifice it again and again
They'll be in a special foil, "TARDIS Showcase" form, and each is uniquely numbered 500, plus the number of the given doctor