Dreamslayer + Animate Weapon + Momentum + Adrenaline + Quintessence is a win-con that can only be countered by SoW + a reflective shield. This only fits into a stall, and works without Adren.
Dreamslayer + Animate Weapon + Momentum + Adrenaline + Twin Universe is a win-con that can be done in a SoB+Dials combo deck. Quanta will be iffy, but that's 20 cards milled for 5 cards. Not okay.
The former combo in a stall would be fine if this didn't mill 1 more each turn. Much of the problem is, of course, that an attack equals a turn for a creature, which is what enables the disgusting Adren combo. If it didn't, it might be balanced enough to be used in both stalls and combo decks, as the latter would be forced to pack more defensive answers. After all, a Dragon+Fractal is an effective win-con too.