No, the disguise cost is a knob the designers can turn and tweak as needed and has a wide range
The number of equipment cards you should include in your EDH deck depends on if you have cards to weather the first few turns as well as cards with awesome search abilities that let you tutor the equipment you need, when you need it
Presuming you have an appropriately high artifact/creature count, this often becomes a Rampant Growth that draws a card and creates a Food
Gallery and List of Myriad Cards Cards with Myriad: Auton Soldier Banshee of the Dread Choir Battle Angels of Tyr Broodbirth Viper Caller of the Pack Chittering Dispatcher Conclave Evangelist Cybermen Squadron Dalek Squadron Elturel Survivors Genasi Enforcers Gnoll War Band Goldlust Triad Hammers of Moradin Herald of the Host Polygofy Scion of Calamity Scurry of Squirrels Sumala Rumblers Tabaxi Toucaneers The Master, Multiplied Tiamat's Fanatics Warchief Giant Wizards of Thay Wyrm's Crossing Patrol Cards That Grant Myriad to Other Cards Auton Soldier Blade of Selves Corporeal Projection Cybermen Squadron Duke Ulder Ravengard Firbolg Flutist Ironwill Forger Legion Loyalty Mass of Mysteries Notable Myriad Cards Blade of Selves Equipping a creature and giving it myriad is a very nice effect, and it combos with a lot of different stuff
The result was Bucky very rarely sees play now
Doran, the Siege Tower The following things are all true at the same time of Doran, which if you look at nearly every other conceivable Magic card, seems impossible: It shows something about the world it belongs to, it has an intriguingly "different" mana cost and p/t, it demonstrates a never-then-before-seen ability with very few words, and finally the flavor text effortlessly ties the smile-inducing ability, the nature of the character, and its application to our real lives