Summon Hungry Spirit (Sp): Three times per day, the Great Wendigo can automatically summon 2d12 ghouls, 1d6 ghasts, or 1d3 wind walkers. This ability is the equivalent of an X level spell.
Those are the numbers from the original text, but I feel like ghouls aren't that much worse than ghasts to explain the discrepancy in numbers. Want to make it more like 1d12?
Edit: Maybe we should also do a 3.5 version of the wind walker to go with this, too.