wild_growth.lua

local combat = Combat()
combat:setParameter(COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_EARTH)

function onCreateMagicWall(creature, tile)
	local item = Game.createItem(ITEM_WILDGROWTH, 1, tile)
	item:setAttribute(ITEM_ATTRIBUTE_DURATION, math.random(38000, 45000))
end

combat:setCallback(CALLBACK_PARAM_TARGETTILE, "onCreateMagicWall")

local spell = Spell("rune")
function spell.onCastSpell(creature, variant, isHotkey)
    return combat:execute(creature, variant)
end

spell:name("Wild Growth Rune")
spell:group("attack")
spell:id(94)
spell:cooldown(2 * 1000)
spell:groupCooldown(2 * 1000)
spell:level(27)
spell:magicLevel(8)
spell:runeId(2269)
spell:charges(2)
spell:isBlocking(true, true)
spell:allowFarUse(true)
spell:vocation("druid", "elder druid")
spell:register()