This is what my first draft looks like: Creatures (15) Lands (16) Spells (30) Im not sure if this is what the deck is really supposed to look like it might be that you want to start off a little more midrangy, especially with some Lightning Bolts for removal and use the Ascendancy/mana accelerant interaction mainly as an engine to supercharge a Young Pyromancer tempo strategy or that on the contrary non-dedicated things like Young Pyromancer simply dont have a place in the deck
A severe exploit in this manner is unlikely, however, given the lessons WoTC has already learned from older abusable counter-based cards in MTG
Some of my favorite decks have been different flavors of WU control, so exploring the ins and outs of the color pair has been a lot of fun
Of course, speaking of new cards, something thats been great about Disney Lorcana is that new characters are continually added to the game
Artifacts can be even harder to remove, and aggressive decks can punish black quickly, especially when its spending life to fuel its game plan