[Weakaura] Target of first two slags (mythic blast furnace)

[Aughyssul]

As the title describes, does anyone have/know how to make a weakaura similar to the one seen in the Method Mythic Blast Furnace kill video, where it shows who the marked slags are targeting.

Essentially, only the first two slags that spawn really matter in the second phase, and it's important to know who they're targeting (they will be marked).

The weakaura I'm looking for will look like this:

{mark} slag: [target]
{other mark} slag: [target]

Any help here would be greatly appreciated.

[Krazyito]

Info: http://www.voximmortalis.com/threads...ll=1#post33543

Auras: http://voximmortalis.com/wiki/weakau...ackrockfoundry