Polymorph

[Mattao19]

What's the best creature (in Modern) to {Polymorph} into? I though {Progenitus} or {Emrakul the Aeons Torn} but apparently {Darksteel Collossus} is favored

[ImTheGuy]

I would definitely use Emrakul.

[Lyriczulu]

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.

[Arbitratur]

Def. not {Darksteel Colossus}, but {blightsteel colossus} he'll yes! Or  {Emrakul, the Aeons Torn} . Either or will do