[Raigen.Convict]

I like Kunais idea of bumping up the FP cost... But here's one even better... For a certain number of rounds you gain a stacking debuff that essentially works like Kog Maw's ultimate from League, the FP cost rises per use.
First cost is something like 30-40 fp, then it bumps up to 50-60 fp, and so on to a cap until you wait 2 rounds before using it again.

This will give us a solution to stop the spam of this ability being so rampant while also allowing its use in crucial situations like this to continue.