Putting my ideas down first. I'll follow them up when I got time, but being here says that I said it first. lol
New Ability
"Defensive"
Effect - Defensive cards only work while your Life is less than your opponents.
This is representitive of tactical theology in that the opponent must wage war on your ground to complete the action of eliminating you but you cannot engage your opponent from your own shelter. Cards that will get defensive as a trait are those that represent Fortifications, Tactical Terrain benefits, Creatures designed to not attack, Cards designed to offset an aggressor. As an exchange for the penalty of being delayed while ahead, defensive cards will have much more powerful affect per cost.
New Ability
"Beast"
Effect - None. Simply defines creatures with a feral intelect
Current Cards but not limited to - Minor Vampire, Cockatrice, Vulture, Wyrm, Antlion, Blue Crawler, Phoenix, Saphire Charger, Abomination, DejaVu
Synergy Card -
Instinct
Your "Beast" creatures get +2 Atk, Your non-beast creatures get -1 Atk.
Predation
Destroy target beast.