The one we all wish we had in 2008, when MW20/30 cost at least twice as much as your mortgage payment for that month.
I've been making up odd magic spells in my head for no reason whatsoever, and I've been doing this a lot when I'm all out of things to think about. I thought I would turn it into a silly game.
If you like, you can be as creative and as imaginitive as you want. This is the place to throw out any brain-floaters running around in your head. Your ideas can be MapleStory-themed or not, but since I assume that's the one piece of knowledge everyone has in common around here it would make sense. Water > fire, fire > ice, etc., but there are absolutely no limits as to what elements you want to make up. The one rule is simple: Make up a spell that counters the above poster's spell.
A: "Fire Arrow" - Conjures a flaming bow and slings a burning projectile at an enemy. (Fire)
B: "Riptide" - Blasts enemies with damaging waves of water. (Water > Fire)
Have fun, and I'll start:
Conjure Light - A blinding flash appears at the caster's hands, disabling nearby enemies. (Light)