Isamaru, Howl of the Hunt

Whenever Isamaru, Howl of the Hunt attacks, each other attacking Hound gets +2/+2 until end of turn.
Whenever Isamaru, Howl of the Hunt blocks, each other blocking Hound gets +2/+2 until end of turn.
{w}{w}: Isamaru, Howl of the Hunt gains vigilance until end of turn.