How do you determine the DC to cast defensively for spell-likes that don't replicate actual spells? Do you just assume it's 0 and thus a DC 15? If it matters the specific ones that came up in game are the paladin's divine bond and the travel domain's dimensional hop, though I'm sure there are others.
They do according to their entry in the universal monster rules, and I actually just found my answer in the entry for spell likes in the magic chapter, as the highest level spell they can cast from the class that grants it. I had just been looking in the glossary, sorry and thanks to anyone who was looking.