good heroes in x hero siege:
paladin-cleaving attack
dryad-multiple arrows/spell immunity
ranger-bomb arrows(aoe)
dwarf sniper-the red bullet he shoots(forgot the name) has aoe
mk-muradin's hammer
pit lord-cleave/doom
huntress-bouncing attack/200% enhanced dmg
blademaster-mirror image, bladestorm
demon hunter-metamorphosis/200% life leech
basically a lot of heroes are good if u know how to use them. the ones that suck IMO: blood mage, archmage (both male and female), potm, beastmaster, sorceress, warlock, ghost (imo, immolation only good in beginning, sucks later. also can only attack 1 target at a time, which means bad for 2nd event).