...If it was buffed to all damage any [both yours and opponent] creature sustains without dying. There's only one strategy right now: Use your 6 Gravity Pulls on your high HP creatures, maybe replace-with/add-in armagios.
what if it was just your creatures? As in any of your creatures damaged by your opponent (with or without gravity pull. I am kind of against the limit to gravity pull only, but I am still thinking about this card.) heal you for the damage taken. Then use your idea for the time frame this card lasts. I think if he used my mechanism though, the card shouldn't drop cost because of how powerful it would be. It is basically a protection for your creatures. Or play it when your creatures are poisoned and get some use out of them before they die.
but when I made the comment about how many strategies would arise, I was thinking of what you said about using my mechanic and setting time limit.
As it currently is, I think it is just too limiting.
Also I like the idea of it only healing if it isn't killed (*edit* which is already part of the card my bad
). That limits it because once you add it to all your creatures it will be too powerful.
Still
for the idea. Cool concept of healing for damage taken.
Now This card makes me want to make a self infliction card. perhaps something like a rain of fire which does 1 or 2 damage to all of your creatures. would be interesting.