Even after the companion mechanic got rebalanced, Lurrus proved too powerful for most formats that could easily match its deckbuilding requirement and turn it into a grindy value engine
While rarity often indicates the broad utility of a card, it also comes with a higher mana cost and doesn't necessarily combo well with the rest of your deck
The deck then features a multitude of spells that allow you to roll dice including creatures (Celebr-8000, Chaos Channeler, Clay Golem, Earth-Cult Elemental, Herald of Hadar, Hoarding Ogre, Iron Mastiff, Lightfoot Rogue, Monoxa, Nothic, Swarming Goblins), Sorceries (Attempted Murder, Myrkul's Edict, Recruitment Drive, Thunderwave), instants (Contraband Livestock, Farideh's Fireball, Six-Sided Die), and many more
For example, if two creatures you control with lifelink deal combat damage at the same time, Aerith Gainsborough's second ability will trigger twice