This is a list I'm running in our local campaign as a first time Wych army player:
ARCHITE w/ agonizer, combat drugs, shadow field, trophey rack, splinter pistol, plasma grenades
9 WYCH RETINUE w/ succubus, agonizer, combat drugs, trophey rack, 2 blasters,wych weapons, plasma grenades, raider with disintigrater
10 WYCHES w/ succubus, agonizer, combat drugs, wych weapons, 2 blasters, raider with dark lance
10 WYCHES as above without raider
10 WYCHES as above
10 WARRIORS w/ sybarite, webway portal
10 WARRIORS as above
I've played these guys for a grand total of 2 games and did really well with them against a 1500 pt Death Guard army and a shooty 1500 pt. Emperor's Children army.
The Death Guard lord never got a chance to do anything, as he was off the table along with his retinue by turn 3. In turns 4 and 5, the Wyches ate through a couple more squads and had pretty much stemmed the Nurgle advance.
The game against the Emperor's Children ended halfway through turn 6 as almost every Chaos marine had been eliminated.
In spite of this, I think I've just been lucky and there might be better ways to do up my list.
Any suggestions along with the tactics behind them will be appreciated.