What's the best creature (in Modern) to {Polymorph} into? I though {Progenitus} or {Emrakul the Aeons Torn} but apparently {Darksteel Collossus} is favored
I would definitely use Emrakul.
I guess it depends on the deck, but in a vacuum I would say {Emrakul, the Aeons Torn} or {Blightsteel Colossus}, possibly {Griselbrand} depending on the deck.
Def. not {Darksteel Colossus}, but {blightsteel colossus} he'll yes! Or {Emrakul, the Aeons Torn} . Either or will do