Roll of Thunder (long range, targeted)
The screen flashes white as a lightningbolt hits, doing minor damage. Then, after a period of time proportional to the distance between the caster and the distance to the target, the sound of thunder stuns all enemies in the targeted area for a second or two.
Charge (buff)
The caster channels the storm's might through his body, leaving him vulnerable. After a long charging period, the caster gains vastly increased movement and attack speed and an orb-of-lightning ability. All these will fade after a short period. However, if the channeling is interrupted before it is complete, the caster still gets a buff, proportional to the charge completed (for example, stopped at three seconds into a ten second charge, buffs increase speed by 15% instead of 50%)
It LIIIIIIVES!!! (summon)
Fires a lightning bolt at a pile of corpses, galvanizing them into a hideous parody of life. If there's one corpse in the targeted area, gets a zombie. If three or more, gets an Abomination for every three corpses.