Have been testing your second version (no dragons) in trainer against T50 without the best of luck so far (1-6). Granted, T50 =/= PVP, but its a fair approximation IMHO. (Plus, you
know how much I want this deck to work!)
1. Got annihilated by Fahrenheit stall deck (early explosions on pendula, had to discard cards)
2.
rainbows seem to be running 2 pulvy's + 2 permafrost + X SoG as standard these days, but the decks got only 2 explosions, so....can't keep enough phoenix unfrozen to do much and pulvy's taking down fire bucklers.
3. Mindgate deck---ugh.
4.
deck: shield kept scarabs from accumulating (had to firebolt a second pharoah then paradox him) but no explosions + no SoG for me and eternity + procrastination for him = slow, inevitable death.
Overall, I haven't played against many creature decks that don't quint them, so antimatter was nearly useless. I played it on a maxwell's a couple of time just to keep it alive when my buckler got stolen. What I never seemed to draw when I needed it:explosion. Maybe needs a couple more of these, especially considering your maximum damage potential is 43 (when every creature + discord are in play.)