I agree with the other members, this card is really UP... if played in mid game, while the opponent already has quite a few creatures down, would be destroyed in 1 turn, thus being incredibly sub par compared with other shields.. And without even mentioning the massive HP loss..
What do you think about this mechanic?
"Reduces physical damage by X / Absorbs X damages: your maximum HP reduces by X per turn"
More in line with a blood shield, which sucks your own blood to defend yourself, I think