local npcId = 190015 -- Boss entry id.

local mjafko = {}

function mjafko.OnCombat(event, creature, target)
    creature:CastSpell(target, 72905)
    creature:SendUnitYell("Let the battle begin! You will all DIE! HAHA", 0)
    creature:RegisterEvent(mjafko.FrostBolt, 2000, 0) -- Every 2s will cast it
    creature:RegisterEvent(mjafko.bersek, 1000, 0)
end

function mjafko.FrostBolt(event, delay, pCall, creature)
    creature:CastSpell(55696)
end

function mjafko.bersek(eventID, delay, pCall, creature)
    if (creature:GetHealthPct() <= 80) then
        creature:RemoveEventById(eventID)
        creature:SendUnitYell("80proc", 0)
        --creature:CastSpell(26662)
    end
end

function mjafko.OnReset(event, creature)
    creature:RemoveEvents()
end

RegisterCreatureEvent(npcId, 1, mjafko.OnCombat)
RegisterCreatureEvent(npcId, 23, mjafko.OnReset)