Thunderous Might BNG/114

Set: Born of the Gods
Collector Code: BNG/114
Finish: Regular

Name: Thunderous Might
Type: Enchantment — Aura
Oracle text: Enchant creature Whenever enchanted creature attacks, it gets +X/+0 until end of turn, where X is your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.)