Karla's Circlet

Bestow {3}{u/b}{u/b} (If you cast this card for its bestow cost, it’s an Aura spell with enchant creature. It becomes a artifact again if it’s not attached to a creature.)

You control enchanted creature. It gains hexproof.

Whenever a creature is put into play from a graveyard you may have Karla's Circlet
become an Aura and attach this to it.