Putting an Armadillo Cloak on him and swinging even once can make racing absolutely impossible

A Trail of Teacups Aberrant Abundance Abundant Growth Abzan Beastmaster Advancing the Spirit Adventure Awaits Aggressive Urge Agonasaur Rex Airship Crash Altanak, the Thrice-Called Antique Collector Arctic Wolves Argothian Enchantress Armorcraft Judge Audacity Barkhide Mauler Barrier Breach Battle Mammoth Beast Whisperer Beastbond Outcaster Become the Avalanche Beneath the Sands Benefactor's Draught Bind Bind (playtest) Blessing of Frost Bloated Toad Bonds of Mortality Bookwurm Boseiju Reaches Skyward Braulios of Pheres Band Break Asunder Briarbridge Patrol Briarbridge Tracker Broodlord Bugenhagen, Wise Elder Built Bear (playtest) Burlfist Oak Byway Courier Cactarantula Caldaia Guardian Caldaia Strongarm Carven Caryatid Chalk Outline Champions of the Perfect Charge Through Claws of Wirewood Cloaked Cadet Coliseum Behemoth Collective Unconscious Colossal Majesty Communal Brewing Compost Concord with the Kami Confront the Unknown Contaminant Grafter Crystal Carapace Cultivator Colossus Curious Altisaur Darkwatch Elves Decree of Savagery Deepwood Denizen Dissenter's Deliverance Dosan's Oldest Chant Down in the Valley Driven // Despair Drumhunter Earthshaker Dreadmaw Edge of Autumn Edgewall Innkeeper Eidolon of Blossoms

The card starts as a 1/1 legendary creature
Additionally, if there's a board wipe and you lose all the creatures you searched for (or if you simply activated your Shadowborn Apostles), the best way to return them all to your hand is a one-drop called Echoing Return
White and red both outclass green at the all important low end of the curve for consistency in their many-bodies-in-one-card cards
In that sense, it reminds me a lot of Metastatic Evangel, another ridiculously powerful counter-generation engine at two mana