So, if you cast [Arcane Proxy] for its prototype cost, your devotion to blue is 2
In the announcement article Wizards notes that these cards are frustrating to encounter, and at worst, combo with wheels to do some nefarious things. Going forward, it looks like less restrictive card draw is a priority
SAST-JP019 Shiranui no Mononobe / Shiranui Spearitualist Level 4 FIRE Zombie Effect Monster ATK 1500 DEF 0 You can only use this card names (1) and (2) effects once per turn each

Sort Rarity Card Type Venusaur EX #1Ultra Rare $11.16 M Venusaur EX #2Ultra Rare $24.09 Caterpie #3Common $0.28 Metapod #4Uncommon $0.37 Butterfree #5Holo Rare $3.55 Paras #6Common $0.33 Parasect #7Rare $0.29 Tangela #8Common $0.24 Pinsir #9Rare $0.33 Leafeon EX #10Ultra Rare $45.56 Charizard EX #11Ultra Rare $26.02 M Charizard EX #12Ultra Rare $163.58 Ninetales EX #13Ultra Rare $5.58 Ponyta #14Common $0.36 Rapidash #15Rare $0.68 Magmar #16Common $0.24 Blastoise EX #17Ultra Rare $16.70 M Blastoise EX #18Ultra Rare $30.86 Shellder #19Common $0.18 Cloyster #20Uncommon $0.31 Krabby #21Common $0.20 Magikarp #22Common $0.78 Gyarados #23Rare $1.06 Vaporeon EX #24Ultra Rare $23.64 Articuno #25Holo Rare $36.14 Pikachu #26Common $4.07 Raichu #27Holo Rare $2.24 Jolteon EX #28Ultra Rare $32.87 Zapdos #29Holo Rare $40.00 Zubat #30Common $0.27 Golbat #31Uncommon $0.29 Slowpoke #32Common $0.42 Gastly #33Common $0.45 Haunter #34Uncommon $0.69 Gengar #35Holo Rare $38.56 Jynx #36Rare $0.42 Meowstic EX #37Ultra Rare $5.98 Diglett #38Common $0.63 Dugtrio #39Rare $0.37 Machop #40Common $0.26 Machoke #41Uncommon $0.41 Machamp #42Holo Rare $1.58 Geodude #43Common $0.20 Geodude (Stamped) #43Promo $15.00 Graveler #44Uncommon $0.34 Golem #45Holo Rare $2.04 Golem EX #46Ultra Rare $2.82 Hitmonlee #47Rare $0.48 Hitmonchan #48Rare $0.34 Rhyhorn #49Common $0.19 Clefairy #50Common $1.95 Clefable #51Uncommon $0.40 Mr

Anime Cards The primary difference between anime cards and Japanese exclusive cards, like those found in the Mystical Archive, is availability
ExVeemon becomes inferior if the players agree not to use Armor at all, which I won't blame you for