ok im not sure about the synergy thing but i believe i read it somewere that if the shadow warrior or master use any synergy skills (ie: charged bolt sentry then lit sentry then death dentry they would all get synergy bonus from each other but not if they wernt used...order not important just the use of the skill itself) it adds the synergy bonus to the other skills that they USE!! (the synergies must be used for the synergy to work apparently)
now for the traps: u can only have 5 traps on the go at once per character (the assassin + shadow master/warrior count as 1 character as they are summonables). i wish u could have 10 traps but yeah....9 lit sents and 1 death sent...bye bye lister
anyways i hope i kinda helped.
also a little off topic...shadow master is a little better than warrior for several reasons as u may of read:
+ more life
+ more resists
+ better use of skills IE: more inteligent than warrior
+ cast and 'forget' she will deal with problems at hand by herself pretty ineligently
+ uses mind blast....saves a point to invest in synergies which means more damage for u
- cost more mana
- can be a pain over riding ur trap placement
thats all i can think of now. ive never used a warrior in hell cos they seem to die in 1-3 hits so not any good at tanking were as my master can wipe out the mobs for me whilst i chat to people or walk away from the comp to get another coffee
just remember to try to get level 17 in master for all rare gear and ur laughing (after +skills gear...+6 shaow disaplins should come from 2 +3 shaodw claws anyways... so the ammy/armour/helm/anything else u can think of can help to get to level 17 master.)
i found with my WW sin last ladder a level 39 master (maxed with 10 shadow charms and +9 from claw switch...gotta love the +3 shaodw disaplins/+3 master claws..too bad i only got one) she could tank anyting and was able to pk even iron barbs and others pretty easily. also baal had fun tossing her around but she pretty much always got the last hit and killed him for me
so they can be a bit of fun to play around with.
just my rarther large 2 cents
enjoy