Comet Storm XRR
Instant (Mythic)
Multikicker 1 (You may pay 1 any number of times as you cast this spell)
Choose target creature or player, then choose another target creature or player for each time Comet Storm was kicked. Comet Storm deals X damage to each of them.
The obvious use would be in a ramping Valakut deck, which can hit 8 mana easily enough. So given 6 colorless to distribute, it seems the best way to do it is...
X=4 K=2 D=12
X=3 K=3 D=12
where K = number of times kicked and D = total damage
And you can also play it for less, if you had to.
X=3 K=2 D=9
X=2 K=2 D=6
X=3 K=1 D=6
X=2 K=1 D=4
X=1 K=2 D=3
However it isn't astounding unless you have tons of mana to spare.
