Emrakul, the World Anew You need to be swimming in ramp spells for Emrakul, the World Anew to be a useful Eldrazi commander, but what else would a colorless deck run
To top it all off, all attacking creatures get the +3 from the Warrior, so hed be an unblockable attacker at 6/3 with lifelink
They're usually best used at end of turn on the turn before you, that way you can respond to anything that happens, and if you happen to have mana left over before your turn, draw some cards
Even then, it will get bought up by players who still need cards
I expect Freya will be popular in Aggro decks thanks to that Flying, which makes it a great combat trick target
Read that again: each creature