Bounce is really really good in cube, it is cheap and often effective removal and aids blue greatly in an area it is otherwise weak in
Its got the swirling energy bits associated with morphs and manifests from the original Tarkir block, and an overall cool blue pallet befitting of the spirit dragon himself
Sadly, well have to wait a few months to find out whether or not thats the case, since theyre not launching for a long while yet
Additionally, when you play a land or cast a spell, Flubs prompts you to draw a card if you have no cards in your hand
Then theres Tadashi Hamada (Gifted Roboticist), who is key if you want to get some of the higher cost cards into play sooner
Deepglow Skate is an unorthodox removal card, but it can double up sludge or -1/-1 counters on all your opponents creatures