best combos: all ranged carries are good with her since she gives global damage aura to ranged heroes ( gyrocopter, lina, morphling, ...etc)
counters: the point to counter drow is to get close to her, heroes like ( huskar, phantom assassin, brood mother, clockwerk, ..etc ) will get her easily specially with blade mail
scepter effect : causes her attacks to splinter on the target, hitting nearby units with normal attacks that deal reduced damage " Splinter Search Radius: 375" "Max Splinter Targets: 2 " "Splinter Damage Reduction: 50%"
mass damage and damage aura.
very good silence .
good slow that can get easy kill when gank.
not tanky at all.
blade mail can counter her very hard.
when dead the team will lose the global aura which make it very hard to win a fight if she die first.