Add a message for when create monster/create familiar/summon nasties fails to summon anything (may happen in extinctionist games).

Reduce the level of create familiar significantly, and make it only able to create replacement pets and possibly similar low-difficulty monsters, and not work if you already have any pets. Add a 7th-level clerical spell, “create minion”, that summons tame/allied minions of your god.

Reduce the level of the spell of create familiar to 2, and give it a dedicated list of summonable monsters based on skill level: Unskilled creates only kittens and little dogs, Basic will pick a random non-fully-grown dog, cat or horse, Skilled will not create kittens, ponies, or little dogs but otherwise will choose any d, u, B, or f that isn’t a unicorn. Expert will choose from the Skilled list, plus any q or w. If not doing that, as a more minor change, don’t create any monster that is always hostile.