Hearthpwn

Wild Growth of Warlock or even better.

That's insane..

I can change it to destroy one of your opponents mana crystals only if that makes ths card balanced with the same cost and rarity.

I don't think hearthstone is the best game for destroying your opponents mana crystals. 

Quote from thazud8D >>

I don't think hearthstone is the best game for destroying your opponents mana crystals. 

maybe:

reveal a minion in each deck if yours cost more, opponent loses a mana crystal, if not both lose a mana crystal 

Quote from Shrm >>

Quote from AcidicDelta >>

Quote from thazud8D >>

I don't think hearthstone is the best game for destroying your opponents mana crystals. 

 Warlock does have cards that destroys your Mana Cyrstals so maybe why not one to be able to destroy one of your opponents mana crystals

 All classes have something of their own. Hunters control lot of beasts, have traps and shots. Warrior have big weapons and armor gaining effects. Every class has its own "identity".

Warlock is about sacrificing stuff whether its health, mana crystals, minions, cards by discarding etc. That is why they have these kind of cards but giving them ability to leach opponent crystals just isn't right. 

 

Quote from ReinVos >>

Yeah, it's kind of a joke. This is an actual card in MTG and it's objectively better than their version of Counterspell too :P