Four: When your opponent plays into a big board clear
Have you ever been holding onto a Twisting Nether only to see your opponent use two Innervates in order to play fourteen mana worth of minions in one turn? It really isn’t fair that you can no longer tell your opponent that you understand his plight. You’ve been there. You know how it feels to lose four or more cards to a single one that you weren’t expecting or couldn’t play around. Maybe they didn’t know your deck ran Twisting Nether. Maybe they thought that Flamestrike didn’t suit your deck at all. Maybe they just thought that it was worth the gamble. In any case, it cost them big time, and we’ve all been there. Letting them know that you understand their pain is important, and Oops just doesn’t cover it.