Its very bad if you dont have creatures, as paying 6 mana for a double Naturalize is not optimal, but on any regular board, youll either power up a strong attack, refill your hand, or both
Lagorin, Soul of Alacria can give +1/+1 counters to two of your mounts or vehicles for a saddle cost of 1
Lastly, there are cards specifically built around this mechanic, like Thieving Varmint or Gonti, Canny Acquisitor, that easily let you cast spells you dont own
It costs 3 mana for one card, 5 for two, and so on, but the repeatable sacrifice outlet has value
One basic land has been printed more than any other basic land
However, the biggest appeal to me is the wrath protection: Wilhelt ensures you still have a board post-Wrath of God, negating one of the biggest weaknesses of many typal decks