void main()
{
object oPC = GetEnteringObject();

if (!GetIsPC(oPC)) return;

int DoOnce = GetLocalInt(oPC, GetTag(OBJECT_SELF));

if (DoOnce==TRUE) return;

SetLocalInt(oPC, GetTag(OBJECT_SELF), TRUE);

object oTarget;
oTarget = oPC;

ActionCastSpellAtObject(SPELL_ICE_STORM, oTarget, METAMAGIC_ANY, TRUE, 40, PROJECTILE_PATH_TYPE_DEFAULT, TRUE);

}