Redeemer x2: (6 + 6 points)
Min Choir: 2
Maximum unit of Deliverers: 8
2 Sunbursts: 6
Maximum Idrian Skirmishers + UA: 13
Total Points: 34.
Basic tactics: Most of army is RNG16; Idrians advance forward and stick to cover to provide point defense shooting, while the rest of the army sits back and lobs ridiculous amounts of AOE down-range at enemy army whilst under the effects of Eye of Menoth.
When the enemy starts to close, Idrians start to Bushwhack; shoot and fall back, shoot and fall back, throwing 2 and 3 man CRA's into harder targets, on the round enemy closes, most things that don't require Focus should be dead. Severius advances and feats, denying the enemy Focus or the ability to boost anything, and hopefully on the last round, you can direct enough firepower to kill their caster, or barring that, whatever heavy hitters they have moved up.
Likelyhood of it being competative? Not very high. Fun to use against friends on game night? Hell yeah.
Alternatively, trade out the Idrians and UA for a full unit of Cleansers and a couple of vassals.