Bloodshadow i studied gravity fights, they never atack with more than 6-7 creatures, so antimatter should deck them out just fine. So i gave you a deck (look in the header of the topic ), but it needs lots of adjustments, cos i think we are short on some creatures from your deck, wait miniwally to update the vault, and then look at the rest of the decks and see what creatures are left for you to make a 50% darkness deck (36 cards in deck i think will be enought to deck out gravity (max i saw they used 34 cards)
melzardust you will fight with adrenalide vampires, it will be a rock papper scissors game, cos Fire has 2 decks with cremation and 2 decks with pillars +firebolt and 1 mixed. With adrenakined vampires you can win creamation and mixed ones (i think they will loose creamation deck )
Yes Life is out!