RUMBLETiGER
Adventurer
Well then you have a problem, most living spells occur naturally only on eberron. If it's within your power to get a hold of a wish effect you can use that to conjure one.
Theoretically any place that sees a concentration of random magic could spawn living spells, but again there's no hard fast way to make them, short of running a magic school and ignoring disposal regs.
In the sandbox world that me and mine play in, we borrow heavily from Eberron elements, a dash of Forgotten Realms, but mostly Vanilla Grayhawk flavor. Living Spells would fit in our world.
But, short of Wish, HOW does one create an area of heavy magical concentration? And hm... Magical schools huh....hmm...
I'll look up Cloud Trapeze spell shortly, don't know that one.You want to move fast? A living Cloud Trapeze spell, from OA, would make a billowy bed of fog that you could sit on. Just make sure it stays willing to be your mount. But how do you care for a living spell? Do they eat? Poop? Mate? Hmmm...
According to the fluff in Eberron Campaign Setting, they feed simply by being in the presence of magic, and no mention of waste. No reproduction short of figuring out how to make these spells in the first place, but hm... as an Ooze, could one split an existing in half? This may be a key to figuring out how to produce these...