The deck is surprisingly powerful, able to quickly flood the table with a huge token army that keep you safe and finish off your opponents with lethal combats, but also has some incredible consistency in card draw, interaction, and protection (Ferrous himself comes protected by common removal spells like Swords to Plowshares!)
He creates loads of free mana for you, which you can spend on big artifacts that will buff Karn himself
Extend the control arm of white with Authority of the Consuls and Voice of Victory
Water falters against Grass and sometimes Lightning
and then sell it for 100," Raftery said
These days, Ratchet Bomb is effectively been rendered obsolete with the printing of Blast Zone, a card that has taken Ratchet Bombs effect and placed it onto a land