1. If you have that sort of CL and are not immortal, you are doing it wrong.
2. If you are going around, blasting that Shadow Miracle shit all over the place forever, it would be foolish to say that none of your spells will ever become a living spell. (MMIII / ECS)
3. Such a spell would be a Huge Ooze with (20 * 1.5^28790) d10 HD (with poor saves) ... and (20 * 1.5^28790) + 10 SR. Oh right, and a creature that is hit by it's slam attack is subject to the spell or spells that the thing is made up of. Ya' know, the old one-two damned Shadow Miracle punch. The thing is.. it's mindless, are the effects randomized from what
a Shadow Miracle
could do? Does it repeatedly slam attack poor woodland creatures with whatever you originally chose for the Shadow Miracle to do that it egregiously spawned from?
Why are 13th CL and higher Living Oozes Huge, yet there is a table that shows Living Spells up to Colossal in MMIII?
4. Don't even think about using Awaken Ooze (Dragon 304), that is unless you can succeed on a DC (10 + 20 * 1.5^28790) will save. Please, someone prove me wrong here.
5. ...Amulet of Ooze Riding (AE&G 85)
EDIT: could we Genesis / engineer ourselves a plane which would have ideal conditions both for a Living Shadow Miracle to spawn (ie really fast time etc...), but also with enough critters everywhere for it to slam attack randomized Shadow Miracles just about every round?
EDIT: On second thought, let's not go to Camelot. It is a silly place.