When you think you'll survive but remember you've built glass cannon AP

Now comes the inevitable MaliciousxSuperb senpai comments.

No one ever said randomized. I'm thinking more like a map in Piltover with steamvents that would have "warning zone tape" around where you'd take damage when it activates, and obviously readable warnings of when it goes off. You could use it to your advantage by shoving people into it, or use it as an escape tool if you have more HP than the enemy. Have it do middle levels of true damage.

You'd know exactly where every hazard is, and when they go off. [slayer-pantheon-thumbs]

This is even better on nasus.

Attackspeed Sion laughs at you all. He'll chop you up to pieces while you're stunned.