How about this spell?

reset button

Press this in case of impending defeat, reverts back to turn 1

//Executed by saving the game at the start and loading....//

HAHAHA

Just realized.  I don't see where the actual elements are listed.  Is the game for sure using the MOM concept?  Or a more traditional Fire, water, earth, Air, Spirit (life/death)?

They've been listed, it's the four basics plus life bit.

If you kept your research artifacts and heroes (having them all teleported back to be around the field where the channeler starts) that might be really interesting.

In some games, certain data was carried over.   one example of this is the chaos emeralds in Sonic the Hedgehog 2.  If you pressed the reset button (not turned off, but the button) then you still had the collected emeralds when you started a new game.

BARA - A barrier akin to prismatic wall, only a barrier against anything. Whether that means in or out I guess would have to be balanced, as well as the barrier's size.

Transport city - uproots a city and moves it.  Whether or not it comes back down nicely ... again subject to balance since realisticly could effectively destroy two cities that way.  Hmmm, first time I ever thought as Dalaran as a weapon.

Wish - hard to impliment i know. And Dom3 had an interesting way.  Not sure if I like the one word guess or multiple choice.  Just a matter of time or modding that the mystery of one word guesses are no longer guesses and risk vs. reward concerns.  BUT I think it's a good creative outlet if someone wants to include it eventually, and for those that won't cheat, interesting results.

(More of a mental note if I get into modding myself: to do a survey of single words that people would guess with. No spell ideas or descriptions just single words to get an idea what player will use in-game.  Spell effects are up to the modder.)

Cold War Nukes Spell (not the in-game name ): Kills all of your units, cities, etc., plus all those of one other channeler you select. Useful for mutually-assured-destruction situations, as well as going out in a blaze of glory. Note that for it to work the way I want it to, it should actually be fairly easy to research (although not effortless) so that multiple people can get it. That way, you can have situations where people are hesitant to attack because the other guy juuust miiight be willing to do something drastic, especially if he is little or weak.

Bad idea. It would make multiplayer virtually unwinnable - the losing player could just cast this spell and force a draw, especially if it's easy to research. But more importantly, it wouldn't be fun in singleplayer. It wouldn't be much fun for the player because in the hands of a person it accomplishes about the same thing as pressing the "surrender" button, just with a little more pizazz. And it also gives a "you lose!" button to the AI, which just isn't much fun. I don't like "you lose!" buttons, except for another player accomplishing a victory condition or military elimination - but those are hardly buttons, more like complicated mazes where wrong turns end in a meat grinder.

I guess it all depends on how well the AI can handle it. What I am hoping for is for the AI to be able to understand that it should not use this spell just any time, but still use it in a few rare situations, to add a little tension. Maybe not TOTAL destruction, and if the AI cannot get it, then ndefinately no.

Lady Luck's Will:

One of the players (human, AI or alien) is chosen, randomly, as the winner of the game. The rest lose (I mention it just in case).

"I won! I won!" - Patrick The Weak (and Lucky).

Didn't a Dev post that a winning condition was learning and casting some specific spell? Can't find the entry, but I beleive it was something like "Eden" or "Genesis" or "Imbue Life."

EDIT:

I meant to quote an earlier post "Maybe it could be a victory condition, amass enough of all types of mana + a significant amount of essence and create the some sort of 'Tower of Elements'"

I don't know if I'm allowed to post this, but the manual for MoM is available here So, if you want to reference it, now everyone can follow

If SD doesn't want this link here, remove it, or let me now so I can remove it...