Skaven are high to mid tier with skrye, I’d recommend using a lot of jezzials and rattling guns in a 1k point list. Then use an arch warlock and give him the traits overseer of destruction (reroll failed hit rolls for three weapon teams withing 13”) and the Esoteric Warp resonator (+1 warpstone sparks per turn) then use the warpstone sparks to add 1 to the damage characteristics of your rattling guns and jezzials to delete units from the game (but they have a chance of suffering d3 mortal wounds when you roll a dice and the result is a 1). So boom, add some clanrats and that is a potent Skaven army.
