Having every card be the same colour makes them difficult to parse across the table, especially for people with visual impairments or sensory processing difficulties (as noted by Magic Proxy artist Meghan "Sheepwave" Burden)
The Limit Break Commander deck is currently selling for roughly $52 on TCGplayer
Goblin Engineer is a retro foil reprint, highly useful for artifact-based decks, and worth $9.48
Let me know in the comments below or over on the Draftsim Discord
Since Sefris gives us the rare opportunity to reanimate things at instant speed (any time we can get the last venture trigger in), we can even use these hatebombs reactively to blow out our opponents like reanimating Sunblast Angel in response to an attack, or Avacyn, Angel of Hope in response to Wrath of God
This specific card's sale to a private collector shattered all previous records