Duskmourn: House of Horror Death Toll Commander Deck includes: 1 ready-to-play deck of 100 Magic: The Gathering cards (2 Traditional Foil Legendary cards, 98 nonfoil cards) 2-card Collector Booster Sample Pack 8 new-to-Commander cards 10 new Archenemy cards 10 double-sided tokens 1 deck box (can hold 100 sleeved cards) 1 Life Wheel 1 strategy insert 1 reference card
K'rrik, Son of Yawgmoth Paying life instead of mana with K'rrik, Son of Yawgmoth lets you play rats much faster than usual, though overcommitting can make you an easy target
Also, it sees play in Commander in three/four-color Omnath strategies for a similar reason
$0.35 Draconic Lore Tarkir: Dragonstorm Commander Decks $0.69 Hammerhead Tyrant Tarkir: Dragonstorm Commander Decks $0.49 Voracious Bibliophile Tarkir: Dragonstorm Commander Decks $1.79 Deceptive Frostkite Tarkir: Dragonstorm Commander Decks $0.35 Dragonstorm Globe Tarkir: Dragonstorm $1.99 Will of the Temur Tarkir: Dragonstorm Commander Decks $0.39 Encroaching Dragonstorm Tarkir: Dragonstorm $1.29 Sapphire Dragon Commander Legends: Battle for Baldur's Gate $2.49 Iymrith, Desert Doom Adventures in the Forgotten Realms $1.29 Caldera Pyremaw Tarkir: Dragonstorm Commander Decks $1.49 Broodcaller Scourge Tarkir: Dragonstorm Commander Decks $0.99 Dragon's Hoard Tarkir: Dragonstorm Commander Decks 0 results found
Mmany of those decks indeed rose in popularity
There's ways to generate huge amounts of mana via proliferating repeatedly so this could get strong, but it seems to expensive to consistently pull off