Inner Sanctum

Inner sanctum enters the battlefield with 10 indestructible counters on it.
When Inner Sanctum enters the battlefield,
gain 2 life.
When Inner Sanctum leaves the battlefield,
search your library for an equipment card named Auriel's Bow and equip it to target creature.
{t} add {w}, {u}, or {r}
{w}{u}{r}{t}: remove an indestructible counter from
this card.