What will Ken Goldin do
While it doesn't say it can be a Commander like Lord Windgrace or Estrid, the Masked, Grist's static ability says it's an Insect creature as long as it's anywhere but the battlefield
That said, you've got less than a 1% chance of having one of these inside your booster

Full Decklist Arcane Signet Atarka, World Render Atsushi, the Blazing Sky Beast Within Become the Avalanche Blasphemous Act Bountiful Landscape Breaching Dragonstorm Broodcaller Scourge Chaos Warp Cinder Glade Command Tower Deceptive Frostkite Draconic Lore Dragon Tempest Dragonlord Atarka Dragonlord's Servant Dragonmaster Outcast Dragon's Hoard Elemental Bond Encroaching Dragonstorm Eshki, Temur's Roar Evolving Wilds Exotic Orchard Farseek Fellwar Stone Flooded Grove Forest (x5) Frontier Bivouac Frontier Siege Gadrak, the Crown-Scourge Glorybringer Hammerhead Tyrant Harbinger of the Hunt Haven of the Spirit Dragon Hellkite Courser Hinterland Harbor Island (x3) Karplusan Forest Keiga, the Tide Star Kessig Wolf Run Kodama's Reach Lathliss, Dragon Queen Leyline Tyrant Migration Path Mossfire Valley Mosswort Bridge Mountain (x6) Nesting Dragon Nogi, Draco-Zealot Opportunistic Dragon Parapet Thrasher Path of Ancestry Rapacious Dragon Rapid Hybridization Reality Shift Reflections of Littjara Rockfall Vale Rootbound Crag Sarkhan, Soul Aflame Scourge of the Throne Selvala's Stampede Sheltered Thicket Shivan Reef Skarrgan Hellkite Sol Ring Spit Flame Steel Hellkite Stormbreath Dragon Storm's Wrath Stormshriek Feral Sulfur Falls Talisman of Creativity Talisman of Impulse Taurean Mauler Temple of Abandon Temple of Mystery Temple of the Dragon Queen Temur Ascendancy Territorial Hellkite Thunderbreak Regent Thundermane Dragon Ureni of the Unwritten Vengeful Ancestor Verix Bladewing Whirlwing Stormbrood Will of the Temur Yavimaya Coast Zenith Festival Franchise Magic: The Gathering Original Release Date August 5, 1993 Publisher Wizards of the Coast Player Count 2+ players Age Recommendation 13 years and up Length per Game Variable

Changing Card Types There are seven basic card types in just about every Magic set release namely artifact, creature, enchantment, instant, land, planeswalker, and sorcery as well as other types occasionally used, with battle being the newest example
Sure, Wizards of the Coast is selling even more Commander products every year, but if that leads to better situations for both Commander players and those who dont want to play the format, then its got to be a good thing