Howl of the Hunt 
Enchantment — Aura
Flash Enchant creature When this Aura enters, if enchanted creature is a Wolf or Werewolf, untap that creature. Enchanted creature gets +2/+2 and has vigilance.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL