Raava, The Light Spirit

Flying, Hexproof, Lifelink
If this creature would be removed from the battlefield and Vaatu, The Darkness Spirit is on the battlefield, Suspend 2 instead.
When you cast this creature, you may attach it to another non-legendary creature. That creature gains Flying, Hexproof, Lifelink +3/+5, and "{u}{t}-Two creatures of your choice gain protection
from the color of your choice. You may activate this ability at any time."