Absolute Virtue Absolutely huge for sure, and definitely protects you but Absolute Virtue has an accordingly large mana cost and its lack of protection will likely limit it to being an option in reanimator decks
Adding cards with abilities usually associated with another ink color would fill some big holes, especially when it comes to the ink ramp
For this list, Ill talk about the cards that have a major usage rate across the Modern format along with the cards that fit in multiple archetypes, but Ill exclude cards that have been banned or cards that belong to only one deck, like Colossus Hammer
Lastly, at the time of this writing, Card Kingdom has paused collection purchases
Typical finishers like Overrun and Craterhoof Behemoth quickly end games with Hazezons armies
Three damage to any target for one mana is too good of a deal to ignore, and most decks that can run this effect will run some number of them