gyrn, serrated storage

{t}: add {1} to your mana pool.
{t}: add {b} to your mana pool, you lose 1 life.
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ancient function {p/b}{p/b}:
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).
this artifact enters the battlefield tapped.
{t}, sacrifice this artifact: add {b} to your mana
pool for each blood counter on this artifact.