It makes cards like Aetherflux Reservoir incredibly easy to activate multiple times, and quite literally doubles the value of any lifegain source you have
That uncertainty makes the moment exciting
But its easy to see how this card will be stuck in your hand until your opponents stop killing your commander and mana dorks
Therefore, the more the merrier, right

Gallery and List of Disguise Cards Alley Assailant Arno Dorian Aurelia's Vindicator Aveline de Grandpr Basilica Stalker Bayek of Siwa Bolrac-Clan Basher Boltbender Branch of Vitu-Ghazi Bubble Smuggler Concealed Weapon Concert Kaboomist Coveted Falcon Crowd-Control Warden Culvert Ambusher Defenestrated Phantom Dog Walker Essence of Antiquity Exit Specialist Experiment Twelve Faerie Snoop Flourishing Bloom-Kin Forum Familiar Fugitive Codebreaker Gadget Technician Granite Witness Greenbelt Radical Hunted Bonebrute Lumbering Laundry Mistway Spy Museum Nightwatch Nervous Gardener Nightdrinker Moroii Offender at Large Printlifter Ooze Pyrotechnic Performer Rakish Scoundrel Rampaging Ursaguana Riftburst Hellion Roalesk, Prime Specimen Sanguine Savior Shady Informant Sleuth Instructor True Identity Undercover Crocodelf Unyielding Gatekeeper Vengeful Creeper Best Disguise Cards Looking back to morph, there wasnt a huge amount played from those cards, and the addition of ward 2 isnt much of a bonus on your 3 mana 2/2

It essentially allows you to play politics with its benefits while still giving you something, but I just dont know where this card fits in the format