Idea for new rune keystone for bruisers.

Deal 60-70% of an enemy champions health and gain Adaptive armor and magic resistance.

Adaptive armor and magic resistance 20 armor at first and let it scale up to like 100.

Still has some obvious counterplay but also gives the bruiser a reason to want to go in and execute a squishy enemy.

Haven't given the numbers any thought at all and just made them up as I typed it out, but the overall concept seemed "ok".