Were I DMing it, I'd also feel free to add in all sorts of rigamarole that you have to do to make the ritual work. You know, a stone circle of enchanted menhirs not less than 1,000 years old each, done during a lunar eclipse, uses a bowl of golem's tears, yadda yadda yadda. That not only "feels like" fantasy magic, it feels like the sort of magic that anybody could do if they had all their ducks in a row.