Could this rare Hunter spell become an auto-include in all Hunter decks in The Witchwood?

4 damage for 1 mana? I’ll take it. Looks like that could be legendary Hunter dragon Emeriss in the card art as well?

    Wing Blast
    Class: Hunter
    Card Type: Spell
    Rarity: Rare
    Mana Cost: 4
    Card Text: Deal 4 damage to a minion. If a minion died this turn, this costs (1).
    Revealed by: Tomatos

Seems like a card that should see plenty of play in Ranked ladder. What are your thoughts? Sound off in the comments.