Please stay on-topic...
When I saw this thread I went like... WOOT?! Crismon/Ruby dragon is one of the greatest dragons out there, plus the fact that fire has cremation, so you can play them pretty fast. And not every deck has hp depending CC (i.e. rewind is non hp depending CC), so having low hp isn't that of a big deal.
It's not a waste of anything, since you'll have lots of damage out, and the upped is nearly the same, since most CC make 1 or 3 or more damage (thunderstorm, RoF, Fire Bolt, Ice bolt when more than 10
, shockwave, Eagle's Eye)
Try it in any fire deck and you'll see that it works like a charm... You'll see it specially if you fight AGAINST it.