This deck lacks any stalling between your opponent places its hitters and you active your creatures.
I think sundials would be better in this deck for initial stalling, and a phase shield for later.
Otherwise you will most likely lose in the damage race.
Black hole is also good, since you got a discord
I've been using this deck all week and rarely is my problem in losing the damage race. Your stalling cards are your steals, basilisk blood, and congeals. Don't forget your stealing their quantum so this should be slowing him down and once he puts down a creature you fractal and put down anywhere from 2 - 8 times more damage than him.
I have thought about adding black holes though since rainbows can be a bit problematic and some extra life can really help with those close races. I've decided to take out the aether pillars though and I've added a plague, rain of fire, and a mirror shield.