local condition = Condition(CONDITION_ATTRIBUTES)
condition:setParameter(CONDITION_PARAM_TICKS, 4000)
condition:setParameter(CONDITION_PARAM_SKILL_SHIELDPERCENT, 50)
condition:setParameter(CONDITION_PARAM_SKILL_DISTANCEPERCENT, 50)

local combat = Combat()
combat:setParameter(COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_BLUE)
combat:setParameter(COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_LARGEROCK)
combat:setArea(createCombatArea(AREA_CIRCLE2X2))
combat:setCondition(condition)

function onCastSpell(creature, var)
	return combat:execute(creature, var)
end
