I mean it could be a finisher for a board heavy deck. In a deck like that often you'll have something on board and the shaman windfury card plus this is just 3 extra attacks on any minion which could win the game.
it can be great as a burst causer with windfurry , at any moment with only 2 card slots in the deck the shaman oponent can be treatening lethal. like even a 5/5 left on baord can be 20 damage to the face! if you arrive to reduce his cost by any means like jepetoo it can be game breaking