(Zero is even.) Whenever an opponent casts a spell with mana value of the chosen quality, choose one that hasnt been chosen Put a +1/+1 counter on Gollum
The look in AZs eyes likely conveys the depth of his longing for his beloved Floettehis first Pokmon which left him after AZ used the ultimate weapon to destroy both warring factions of a conflict that had engulfed all of Kalos
Dragons There are plenty of Dragons in this set, but they're not really a mechanic
Back way when, Wizards didn't really make sure that there were ENOUGH playable limited cards in the common slots for sets (no one was playing much limited before the inception of the Pro Tour, around the release of Ice Age ), so horribly unplayable cards like Snowfall and Balduvian Shaman glutted the common slots of packs - and commons are where most of the meat of your limited cardpool comes from
In fact, most decks built around ex cards are pretty damn powerful
Thought you'd never see that happen I bet