Compulsive Research

Destroy target nonblack creature.

(T: Add R.)

Flying (This creature can't be blocked except by creatures with flying or reach.) When this creature enters, another target permanent gains indestructible for as long as you control this creature. (Effects that say "destroy" don't destroy it. A creature with indestructible can't be destroyed by damage.)

Flying, vigilance, lifelink

T: Target attacking creature gets +1/+1 until end of turn.

When this creature dies, create a 1/1 white Spirit creature token with flying.

Exile target tapped creature.

(T: Add G.)