So, this is a nice copy matters with stuff that gets cast from places like exile (adventure, suspend, foretell, etc) or your graveyard (flashback, jump-start) so it's a common genre but with a new take on it
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Protection Magic: Shield counters don't prevent players from sacrificing creatures
Cryptbreaker 6.5 Pretty slow and vulnerable for these sorts of deck
Every time your horrors deal combat damage, opponents mill that much, and at your end step, you can steal something from their graveyard that hit the yard that turn
Regardless of whether you are more aggro or controlling, they should be in your deck