If Locker Room is worth a third of a card I could see Bottomless Pool being worth it, but I suspect Locker Room will be worth less than that
(The defending hero can't defend the attack with more than 1 card from their hand.)
Cudgels gets out of hand if youve got an infinite mana loop, and Eater can turn your creatures into a makeshift Kathril, Aspect Warper or Zetalpa, Primal Dawn
Aether Revolt Spoiler - December 18, 2016 Update 12/19/2016 : Blake Rasmussen , Editor-in-Chief of Daily MTG and Wizards of the Coast employee, has provided the English version of the Tezzeret card from Aether Revolt proper
In order to trade a card, you and your trade partner must select cards of the same rarity
This alone makes it shine among the best colorless cards MTG it lets you cast a four or five-mana commander on turn one and pairs exceptionally well with some top-tier partner commanders, where getting one half of your duo onto the battlefield ahead of curve puts immediate pressure on the table