When flipped, the Seismic AssaultSeismic Assault ability will help make use of your unneeded lands, and provide even more gas to boot
Those lands set constraints about what cards work and dont work, and if you do one right after the other, you get overlap
Breena, the Demagogue Breena, the Demagogue is an innocuous threat that promises card draw to the table then suddenly becomes an 11/13 flier after a few combat steps
It's to cut the weight and dimensions and reduce the postal service cost
Think of it like a conditional Xget the basic deal for cheap, or sink more mana into extra value if you draw it late
Even if your opponent has an evasive or big enough creature that Sokrates can't block, you can tap him to prevent the creature's damage and refill you and the attacking opponent's hand