Liliana has enough life to absorb a lot of hits, and if you can ultimate, its pretty funny to see your opponent when theyre left with only one card of each type (usually a land and a creature)
This card is an excellent collectors piece due to its refreshing new take on the Ultra Rare formula
Then there are enablers like Elven Chorus, Surrak Dragonclaw, or Mystic Forge that support entire card types
What takes it up another level is the fact that later instances of Voidwalker can cast any card with a void counter on it, which makes it brilliant in any deck that can grant it haste and keep bringing it back
Cant we be archfrenemies instead
3 Saryth, The Viper's Fang Another creature that can give all your other creatures deathtouch, Saryth, the Vipers Fang provides tons of protection for your board