vs undead i usually go blade master chieftan grunt and wyverns + some batrider. wyvern just owns the necro, grunt and wave owns the 180 hp weaklings, putting an light orb on blademaster makes nice 1 hit kills against skeletons... i dunno i never harass undead, i just prevent them for lvling up and its gg.
i dunno dracula but no one ever went necrowagons vs me in a solo, maybe it doesnt work vs orc
actualy orcs have the best AA but it takes a quick hand to pull it off
get 2 successfull bat rider suicides on a frost wyrm and 1 troll to finish it off thats hard controll mass bit riders though weak as they may be they can make alot of damage