Gleam of Authority

Enchantment — Aura

Oracle text:

Enchant creature
Enchanted creature gets +1/+1 for each +1/+1 counter on other creatures you control.
Enchanted creature has vigilance and " {W} , {T} : Bolster 1." (To bolster 1, choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Collection:

Dragons of Tarkir

Rarity:

Rare