Selkath, Reborn and Divine

Indestructible
When a dragon you control deals combat damage
to a opponent, you may search your library for a Equipment or Enchantment with CMC equal to
or less than the power of the attacking creature.
You may cast that card without paying it's
mana cost and without paying it's equip cost
if it has one. You must target the creature that
dealt damage to the opponent.