Its important to note that the bestowed quality refers to the card with bestow, not the card thats enchanted by the bestowed aura

Airship Crash Break the Spell Broken Wings Cathar Commando Chomping Changeling Coliseum Behemoth Coordinated Maneuver Cosmium Confluence Curious Farm Animals Deconstruction Hammer Disenchant Disruptive Stormbrood Fangkeeper's Familiar Feed the Swarm Felidar Cub Get Lost Guerrilla Gorilla Heritage Reclamation Hivespine Wolverine Insidious Fungus Keep Out Kellan's Lightblades Leatherhead, Swamp Stalker Make Your Move Mortify Mutant Chain Reaction Nettle Guard Origin of Metalbending Over the Edge Pawpatch Formation Popular Egotist Pyrrhic Strike Quandrix Charm Reclamation Sage Requisition Raid Scrapshooter Seedship Impact Shatter the Oath Shattered Acolyte Shattered Wings She-Hulk, Jade Defender Shredder's Technique Sidequest: Hunt the Mark Spider Food Stormkeld Vanguard Thrashing Brontodon Trygon Predator Trystan's Command Undergrowth Leopard Unforgiving Aim Urgent Necropsy Vengeful Creeper Vivien Reid Voracious Varmint Wear Down Webstrike Elite Withering Torment

It gets to keep all the special abilities and effects they have though, letting you have extra copies of them out and about
But if youre a Red deck thats really good at generating lots of mana maybe your Commander is Electro, Assaulting Battery or Neheb, the Eternal, Fire Nation Turret will be doing 50 damage pretty often
This means that in any official tournament, whether a Mythic Championship or just FNM at you local store, the cards are illegal to play with