Volcano Spell is a Bitch! need help with editing it!

[Hairybeavet]

ok here is the delema i want the volcano ability to cast over 5000 aoe only problem is that the larger the aoe the more ground it raises to make the volcano. well i dont want the ground to raise at all. i dont even need the artwork of the volcano. all i need is the ability to have the rocks shoot out the center and land randomly in its range. if some could help that would be great!