Now that the OP imposter has been dealt with (I have a tribute video on my channel too for those who are interested), here is a preliminary video of the Kullecid with the 1 second Blood Mist cooldown.
I know a lot of people are interested in whether or both he is still a good dragon so I wanted to get this info out there in a rush, but I will make another (hopefully better) video later when I have had time to practice more.
He is still a solid dragon, but requires precise timing and keeping track of multiple variables (spells/towers). Hope this helps!
Edit to add Vid #2: couple hits on (undefended) bases 3-4 tiers up, as well as some specific techniques and strategies I have so far been working on. Undefended videos hopefully to come later!
Edit to add defended footage at Garnet:
Another couple great videos from @Burger at higher tier!