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BA Libby, Fear of Darkness, Blood Lance = 100
BA Libby, Fear of Darkness, Blood Lance = 100
Fear of Darkness is great against most infantry hordes. Blood Lance for Mech car parks.
Rune Priest, Jaws, Living Lightning, Chooser 110
Rune Priest, Jaws, Fury of the Wolf Spirits, Chooser, Melta bombs = 115
We all know Jaws. Fury if it inflicts a wound causes another morale test (combos later). 2x Choosers stops infiltrating Kroot screens as together pretty much cover the board.
Elites:
Libby Dreadnought, Fear of Darkness, Blood Lance = 175
Drop Pod = 35
Libby Dreadnought, Fear of Darkness, Blood Lance = 175
Drop Pod = 35
Libby Dreadnought, Fear of Darkness, Blood Lance = 175
Drop Pod = 35
As BA libbys but Av13
3 Wolf Guard, 3x Combi plasmas = 69
Drop Pod = 35
2 in to Grey Hunters, 1 as a line breaker hiding
Troops:
5 Assault marines, Melta Gun (no jump packs) = 110
+ Free Drop Pod = 0
5 Assault marines, Melta Gun (no jump packs) = 110
+ Free Drop Pod = 0
5 Assault marines, Melta Gun (no jump packs) = 110
+ Free Drop Pod = 0
5 Assault marines, Melta Gun (no jump packs) = 110
+ Free Drop Pod = 0
5 Grey Hunters, Plasma Gun = 85
Drop Pod = 35
5 Grey Hunters, Plasma Gun = 85
Drop Pod = 35
1839 points
So combos with the Base Codex powers - Fear of Darkness instantly causes a morale test at -2LD. Now go to page 30 in the rule book - Morale and Falling Back - if you are already fleeing you fail all morale checks. With 5x Fear of Darkness that can be a couple of units fleeing multiple times in one turn, in addition to tests taken from shooting casualties (unlikely) but Fury of the Wolf spirits/multiple Jaws/bolter/melta/plasma kills could force another.
With Tau the chooser force the Kroot/Infiltrate screens to outflank, or deploy in their deployment zone normally which then gives you more than enough space/range to mind bullet away.
It's got some very obviously bad match ups (Horde Orks), but you can swap out for psychic screech vs fearless/daemon armies etc and divination/telekinesis on all 7 psychics (or telepathy on the BA). Has a maybe a decent chance vs a blob, but if you can make it run turn one it's so big it's more than likely off the board, but you have harder barriers to break through.
Mind you I could be wrong, it just a crazy (and possibly lack of sleep induced) idea.