There's only one thing you need to know in Dungeons and Dragons, Magic Missile.
[...]
Despite all that, I've got a soft spot in my heart for Air Wall. Found useful as everything from shielding against missile weapons to becoming an impromptu surface to allow one to traverse gaps, at first, it
really came into its own in naval combat.
Being chased by hostile ships, a little mystical waving of the arms deployed this invisible barrier as a rather nasty stealth obstacle into which various pursuing vessels ploughed, with hilarious results. And did the fun stop when the magic ran out and no more Air Walls could be conjured into being? No, for (despite being ineffectual) the same waving of the arms at an opportune moment in front of a ship whose crew were now
cognisant of the threat (easily identified as being caused by the annoyingly cheerful wizard sat upon the stern of their quarry) caused them to conduct an unnecessary and somewhat counter-productive evasive manoeuvre straight into the only
other remaining boat from the hostile fleet...
There were
other interesting adaptations (without, of course, a 100% success rate), but this was the
true moment of crowning glory.
(Just remember, folks, one trick ponies invariably fall flat on their face. As did, quite literally, one Force-user in a a Star Wars RPG game, who had relied too much upon favourable dice-rolls insofar as a self-levitation feat of Force usage. And, of course, his luck ran out at
the most entertaining time, i.e. as he was casually staring down through a plate-glass sky-light of a warehouse at the activities of the enemy's workforce, within... The dice
know what they're doing, man, and
they're playing a game with
us!)