Helbrute Exiling creatures from your graveyard can be a real cost for Rakdos decks, but Helbrute has impressive stats coupled with haste
Its rather like Nadu, Winged Wisdom-lite in how you can take incredibly long turns generating value without getting anywhere but annoying your opponents
Well, its a common, and very easy to justify
Certain cards (like Manor Guardian, visible in the gallery above) will allow you to seek a card with specific criteria, randomly pulling one from your library that meets that criteria without shuffling afterward something that couldnt happen at the tabletop without a player manually looking through their deck
Unfinity brings new artifacts like attractions to the games, introduces stickers to modify your cards, and brings Un-cards to Eternal formats for the first time
This definitely can come up in an EDH setting, depending on the strategies of your opponents, especially if you have a way to sacrifice the equipment you steal