Great card idea. With adrenaline would it make you lose 4 health a turn?
A nice idea to prevent fractaling it, but it can still be done.
Though one of these + nightfal = 8|2 at the end of turn one for a mere 2
and 1 life.
So in theory by using fractal you can have (1 on the field + 8 in your hand) 9 of these on the field. So for (16 + 4 + 2) 22
, 8
and 9 life you can have 72 damage and still get elemental mastery because it is decreasing your max hp, and because of that you need to heal less to get to your max hp. Might need some tweaking.
I can already imagine an FG with these, fractal, nightfall, and stone skin. That would be evil...