[@Pair of Hearts]
well I never said all summoning rituals was the same. The main thing that's the same is the set up, though the chants could be entirely different. I have said the system is very expansive, or atlest I'm going to try to make it so. it basically a Magic circle with the ingredients inside, and candles on the edges they to a chant to call forth the summon (you can make it up in regards to your summon partner)

So basically the game world has a lot of freedoms as to what can happen in it even though it's a game.