Also, annihilator 6 is brutal, and while it doesn't have haste it gives you another turn to get that attack off
WUBRG: If you control Applejack, Fluttershy, Pinkie Pie, Rainbow Dash, and Rarity, everypony wins the game
Fight based removal is also the easiest to get blown out with: pump spells, removal, or bounce spells can turn the fight against you
The Markings are in great places for pro work...these are not for gambling, you are not going to take these to poker night and not get run out on a rail...it's not that kind of deck
Theres also relative newcomer Inkshield, which, while expensive to cast, will easily set you up for the win on your next turn
They essentially turn discards from other costs and effects into a form of card advantage for you