local combat = Combat()
combat:setParameter(COMBAT_PARAM_TYPE, COMBAT_EARTHDAMAGE)
combat:setParameter(COMBAT_PARAM_EFFECT, CONST_ME_SMALLPLANTS)
combat:setArea(createCombatArea(AREA_SQUAREWAVE5, AREADIAGONAL_SQUAREWAVE5))

function onGetFormulaValues(player, level, maglevel)
	local min = (level / 5) + (maglevel * 3.5)
	local max = (level / 5) + (maglevel * 7)
	return -min, -max
end

combat:setCallback(CALLBACK_PARAM_LEVELMAGICVALUE, "onGetFormulaValues")

local spell = Spell("instant")

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

spell:group("attack")
spell:id(120)
spell:name("Terra Wave")
spell:words("exevo tera hur")
spell:level(38)
spell:mana(170)
spell:isPremium(true)
spell:needDirection(true)
spell:cooldown(4 * 1000)
spell:groupCooldown(2 * 1000)
spell:needLearn(false)
spell:vocation("priest;true", "elite priest;true")
spell:register()