uyrn, undersea nexus

{t}: add {1} to your mana pool.
{t}: add {u} to your mana pool, you lose 1 life.
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ancient function {1}{u}{u}:
when this artifact enters the battlefield draw a
card, if you payed for this artifact using an
island with a creature secluded under it, instead
draw 2 cards.
{t}, sacrifice this artifact: bring a secluded
creature back into play.