demon blood-iron smelter

blood mana 2 (each {p/b} mana on this card can be
paid for with {b}, or {b} and up to 2 life. for each
life lost this way put a blood counter on it).
flying
{p/b}: add 1 blood counter to this creature.
{t}, {x}, and remove x blood counters from
this creature: play an artifact creature with
converted mana cost x or less from your
hand and put +1/+1 counters on it equal to
its mana cost.