While very comparable to Mono-Blood Midrange, these decks build around the card Locket of Reflection, restricting most of their cards to only two copies. They still play four-of’s of the most powerful removal, but their threats come in a two-of package to get the most value out of casting each one. This kind of strategy tends to snowball out of control if they are allowed to develop a board state and you let a Locket of Reflection stick on the table.
Comparable Archetypes in Other Games
Hearthstone: Wild Reno
MTG: Gifts Rock
Ladder Deck (at time of posting ~80% win-rate)