createAura({
        name = "Vitality Aura",
        auraAbility = "A09D",
        dummyAbility = "A0A1",
        buff = "B00A",
        buffEffect = "Abilities\\Spells\\Human\\Heal\\HealTarget.mdl",
        range = 900,
        cooldown = 1,
        delay = 1,
        values = {
            regen = { 2, 3, 4 },
            threshold = 0.5
        },
        condition = function(source, target)
            return IsUnitAlly(target, GetOwningPlayer(source)) and
                GetUnitState(target, UNIT_STATE_LIFE) < values.threshold * BlzGetUnitMaxHP(target)
        end,
        periodic = function(whichUnit, source, values)
            print("Periodic effect")
            SetUnitState(whichUnit, UNIT_STATE_LIFE,
                GetUnitState(whichUnit, UNIT_STATE_LIFE) + values.regen)
        end
    })