That said, you dont have great payoffs
The Brothers' War was the set prior to Phyrexia: All Will Be One, so you'll be getting some newer cards that can also be used in standard formats if you want
Akawalli, the Seething Tower Alpha Authority Battlefront Krushok Bristling Boar Challenger Troll Charging Rhino Clockwork Steed Clockwork Swarm Familiar Ground Favored Fighter Flopsie, Bumi's Buddy Full Steam Ahead Glorfindel, Dauntless Rescuer Huang Zhong, Shu General Hungering Hydra Ironhoof Ox Krosan Vorine Meltstrider's Resolve Michelangelo, Mutant BFF Norwood Riders Outland Colossus Professional Wrestler Rocksteady, Crash Courser Rope Safewright Cavalry Sinuous Predator Stalking Tiger Sunder Shaman Tahngarth, First Mate The Foretold Soldier Vigorspore Wurm Vorrac Battlehorns White Tiger, Ava Ayala Wolfrider's Saddle Yuan Shao, the Indecisive
These are randomly picked from sealed booster boxes
Any proliferate card you have becomes instantly way more threatening
I think Welder and Daretti offer much more interesting lines of play