Counter-Cards

I am considering adding cards that have an effect based on certin instances "in the opponent's battle-pile."

This will be integral to making counter-meta strategies, for example the yellow and blue cards have many blockers. To counteract this I have decided to make 2 cards

?, Uncommon Red, 6 [Requires Tension 8, Limit - Non-Blockers]
?, Uncommon, Purple, 5 [Deals damage equal to the blockers in your opponents DP]