Leeching Cocoon

Defender, Indestructible
If this creature has 3 growth counters on it, it loses Indestructible.
Whenever a player loses life and there are fewer than 3 growth counters on this creature, put a growth counter on it and gain 1 life.
Sacrifice this creature, Pay 2 life: Search your library or Graveyard for a creature with mana value less or equal to the number of growth counters on this creature and put it on the battlefield. Put a lifelink counter on it.