The real star is that Biorhythm on a stick. It can reduce everyones life to the number of creatures they control
I could see this being huge for 9.5 collectors they all got free upgrades
Air Nomad Student Airlift Chaplain Akrasan Squire Akroan Jailer Akroan Phalanx Akroan Skyguard Akroma's Devoted Alabaster Mage Alaborn Cavalier Alaborn Grenadier Alaborn Musketeer Alaborn Trooper Alaborn Veteran Alaborn Zealot Alert Shu Infantry Alharu, Solemn Ritualist Amateur Auteur Amateur Hero Amazing Spider-Girl Ambitious Farmhand Ambush Paratrooper Ampryn Tactician Ancestor's Chosen Ancestor's Prophet Angel's Herald Angelfire Crusader Angelheart Protector Angry Mob Anointed Chorister Anointed Peacekeeper Anointer Priest Anointer of Champions Ant-Man, Scott Lang Apostle of Purifying Light Apothecary White April O'Neil, Kunoichi Trainee Araba Mothrider Arachne, Psionic Weaver Aradesh, the Founder Arashin Cleric Arashin Foremost Arashin Sunshield
But if you want a deck based on it, this is one of the cards you can build an entire strategy around
It was powerful enough to maintain your spot on the curve admirably while also undoing much of the early damage you'd been taking
While there will occasionally be games against control that we'll lose without Mishra's Foundry, these shouldn't come up too often