Carapace

Reach, Hexproof
{1}{t}Search your deck for an artifact called "Turtle Bracelet" and equip it to this creature. Shuffle.
{5}{t}Use this ability only if this creature has no detransform counters on it. If Carapace has "Turtle bracelet" equipped to this creature, put 5 detransform counters on him, and all creatures you control gain indestructible and you cannot lose control of them until the beginning of your next upkeep. Remove one counter on your upkeep and when Carapace has none left exile it.