Big Will

function bigWill_onSpawn( unit, _ )

    unit:SetMovementType( 11 ) -- foward then stop
    unit:CreateCustomWaypointMap()
    unit:CreateCustomWaypoint( 1, -1693, -4343, 4.32, 1, 0, 1, 0 )
    unit:CreateCustomWaypoint( 2, -1684, -4333, 2.78, 1, 0, 1, 0 )
    unit:CreateCustomWaypoint( 3, -1682, -4329, 2.79, 1, 0, 0, 0 )
end

function bigWill_onAIUpdate( unit, _ )

    unit:RemoveFlag( 0x0006 + 0x0035, 0x00000100 + 0x02000000 )
    unit:DisableCombat( 0 )
    unit:SendChatMessage( 12, 0, "Ready when you are, warrior." )
    local value = unit:GetUInt64Value( 0x0006 + 0x000C )
    local target = unit:GetUnitByGUID( value )
    -- dont crash please
    if target then
        unit:AttackReaction( target, 45, 0 )
    end
    unit:RemoveAIUpdateEvent()
end

function bigWill_onReachWaypoint( unit, _, waypointId, _ )

    if waypointId == 3 then

        unit:DestroyCustomWaypointMap()
        unit:Emote( 27, 0 )
    end
end

RegisterUnitEvent( 6238, 18, bigWill_onSpawn )
RegisterUnitEvent( 6238, 19, bigWill_onReachWaypoint )
RegisterUnitEvent( 6238, 21, bigWill_onAIUpdate )