20 cards where the color identity ≤ BW and the card types include “zombie” and the card types include “legend”

A-Acererak the Archlich (Adventures in the Forgotten Realms #A-87)
Acererak the Archlich (Adventures in the Forgotten Realms #87)
Balthor the Defiled (Judgment #61)
Daxos the Returned (Commander 2015 #43)
Ebondeath, Dracolich (Adventures in the Forgotten Realms #100)
Geth, Lord of the Vault (Double Masters #94)
Geth, Thane of Contracts (Phyrexia: All Will Be One #95)
God-Eternal Bontu (War of the Spark #92)
God-Eternal Oketra (War of the Spark #16)
Gorex, the Tombshell (Commander Masters #164)
Haakon, Stromgald Scourge (March of the Machine Commander #252)
Hancock, Ghoulish Mayor (Fallout #45)
Josu Vess, Lich Knight (March of the Machine Commander #253)
Korlash, Heir to Blackblade (Future Sight #87)
Mikaeus, the Unhallowed (Commander Masters #173)
Ratadrabik of Urborg (Dominaria United #213)
Sidisi, Undead Vizier (Dragons of Tarkir #120)
Tormod, the Desecrator (Commander Legends #155)
Vladimir and Godfrey (Alchemy Horizons: Baldur's Gate #32)
Vogar, Necropolis Tyrant (Game Night: Free-for-All #3)

It is the moment of discovery, the triumph of the mind, and the end of these results.