They pair with the Animus in much the same way that Kassandra pairs with the Spear of Leonidas
Obviously, the teamwide buff and on-type token generation are an ideal package for any tribal deck
Outside of decks that use Lurrus of the Dream-Den, Elspeth Conquers Death should be a control staple in all decks that maximize its effects
Gev helps keep the pressure on opponents with several abilities that support aggressive playstyles, and it's also a rare typing, with both Lizards and Mercenaries among the rarest subtypes in Magic: The Gathering (at least prior to the last few sets)
Cecil, Dark Knight / Cecil, Redeemed Paladin Besides its incredible, flavorful design (FFIV), Cecil, Dark Knight is also a very good black suicide aggro card as a 2/3 deathtouch creature with a little bit of a downside that you can turn into upside later