User blog comment:Willbachbakal/(Champion Rework) Rumble, the Mechanized Menace/@comment-25228021-20160909122125/@comment-25228021-20160910135829

Okay, I see your points. CDR is meant to be that stat you pick to shorten the downtime of your spells, though, so for a mage-ish character like Rumble it'd be his window of vulnerability. What I would do from your current iteration is lengthen the delay before he starts losing heat, so that Rumble needs to space out his ability casts a bit more.

I'm unsure whether or not your current version of Rumble disables his Flamespitter when overheating. If it does, overheating leaves him without any damage; if it doesn't, overheating has no real impact on his damage output. I don't know which option bothers me the most.