If this is a just a “single” titan ability like “remove 2 opponents creatures from game” it will be hard for this to be good I imagine.
But if this is actually “gain the abilities of a random titan, change each turn” then it should say that and it will sad when you get randomly decimated by a titan that you can’t play around.

That being said…..doesn’t feel like a mage card, should be a rogue, in previous sets they have been all about digging up bones and excavating stuff.

Yeah I use it in aggro imbue druid and its one of the better cards in the deck, can pretty much always have it active by turn 3/4 and not much survives it that early. I assume the buff will reduce the number of imbues needed to just 1, so other classes can actually play it on curve.

Just gonna try to call this early, but Ravenous Felhunter needs one of its numbers changed. Either reduce cost to 4 mana or reduce the deathrattle resurrect cost to 3 or less mana. Right now the continous loop between Ferocious Felbat resurrecting 2 Ravenous Felhunters, which in turn resurrects 4 Arkonite Defence Crystal, is a bit too much. This isn’t even including Carniverous Cube and Return Policy.