Shrine Guardian

Reassemble {b/g}{b/g} (Whenever this creature dies, you
may pay {b/g}{b/g}. If you do, return it to the battlefield
phased out under your control with 3 reassembly
counters on it. As long as it has a reassembly counter
on it, it doesn't phase in. At the beginning of your
upkeep, remove a reassembly counter from it. When
the last is removed, it phases back in.)
Sacrifice Shrine Guardian: Target creature gets
-3/-3 until end of turn.