There was the 2e version of Mordenkainen's Force Missiles.
(Not the weak 3e one
http://www.wizards.com/dnd/article.asp?x=dnd/sb/sb20020809a)
Mordenkainen's Force Missiles (Evocation)
Level: 4
Range: Visual range of caster
Duration: Instantaneous
Casting Time: 1
Area of Effect: 1 creature
Saving Throw: None vs missile (save vs spells negates bonus concussive damage)
This spell creates a brilliant globe of magical energy, which streaks forth from the caster's hand to unerringly strike its target, much like a magic missile spell. The target must be seen or otherwise detected.
The wizard creates one missile at 7th level, and an additional missile at every third level after 7th--in other words, two missiles at 10th level, three at 13th, four at 16th, and so on, to a maximum of seven missiles at 25th level.
Each missile inflicts 2d4 points of impact damage upon the target creature, and then bursts in a concussive blast that inflicts 1 point of damage per level of the caster to all within a 3-foot radius. For example, a 12th level wizard could conjure two force missiles, each of which strikes for 2d4+12 points of damage. A target creature that makes a successful saving throw vs. spell negates the concussion damage, but the impact of the missile itself allows no saving throw.
Up to 7 2d4 missiles, no max on concussion damage. It was wonderful, but admittedly overpowered at high levels.
I would increase the spell level of it to 8 and cap the concussion damage to +10, change the burst to 5'. At 25th level this would be 35 (on average) unavoidable damage, +70 points of damage that can be negated completly.
