I want to pick all three because all three do what I want black walkers to do.
I would 100 % keep Death’s Majesty because
1: It is fair.
2: Creates tokens for Orzhov or Abzan tokens.
3: Creates tokens for Aristocrats.
4. Self-mills for reanimator and so many other niche strategies likes lands/artifacts/enchantments.
5: Has an ultimate that doesn’t end the game but swings in your favor.
I would maybe cut Chain Veil Lilli due to power levels but if I could I would keep all 3.
I would 100 % keep Death’s Majesty because
1: It is fair.
2: Creates tokens for Orzhov or Abzan tokens.
3: Creates tokens for Aristocrats.
4. Self-mills for reanimator and so many other niche strategies likes lands/artifacts/enchantments.
5: Has an ultimate that doesn’t end the game but swings in your favor.
I would maybe cut Chain Veil Lilli due to power levels but if I could I would keep all 3.