Does the Rogue Crystal Core mechanic affect played AND summoned minions? Are Jades affected? "Yes, both played and summoned. Also Frogs and Sheep. Pretty much everything gets turned into a 5/5." - Peter Whalem.
Crystal Core- does it make your minions 5/5 forever, i.e heal back up to 5 every time they take damage? "No, only when you play the reward or the minion is summoned. Not every turn - you can buff them after." - Peter Whalem.
What about before/after battlecries? Will an Edwin always be 5/5 or can you get him to 7/7, 9/9, etc? "If Edwin's in your hand/deck when you play the quest reward, he'll be 5/5 + 2/2 per card. If he's on the board, he'll be 5/5." - Peter Whalem.
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This could be very good in a aggro/tempo rogue. Remember you have cards like shadowstep, brewmasters, thistle tea and the new rogue card that is like half thistle tea. So i think this card has lots of potential.