It's so good, in fact, that Commander's Herald writer Priscilla Kwortnik put it in the A-tier of her tier list of one-mana creatures in cEDH
There are certainly spots in which it can be good, but most of the time, if you get your engine going, then you draw enough cards and produce enough hard-to-kill creatures that the benefit either doesnt come up or is redundant, and drawing a card while you kill something with Dead Weight is really not good enough
The Complete Experience: 16 packs give you a much higher chance of pulling "chase" cards and completing a significant portion of the set compared to single packs
Graded Population Report: Norman Osborn [Borderless] #220 Visualize the distrbution of grades in the chart
Liliana, Defiant Necromancer has all the run-of-the-mill traits you expect on a Liliana planeswalker, though its a shame the discard effect is symmetrical
To begin with, it's easy to summon, without much restriction, and a good level for Synchroing into