The creature will still get +1/+1 until end of turn
Thats very average, but you can actually Foretell this to spread the cost over two turns
The cards available in Streets of New Capenna are playable all the way back to Modern, and each card has specific homes in the format-rich world of Magic: The Gathering
For anything worth about $100 or more, buy it already graded by PSA or CGC, which authenticates it and removes the risk
How about trying Arcbound Whelp, Dragon Whelp, Fledgling Dragon, Firescreamer, Furnace Whelp, Henchfiend of Ukor, Lightning Dragon, or any other firebreathing options at four mana instead
The power inherent in Werewolves tend to be invested in its back side, so it just seemed like an exercise in frustration to have multiple opponents who have the power to flip your Werewolves back into puny Human form