Binders can even be used to hold a large number of cards, as long as you get one that's big enough
I also think of Fblthp and the MTG version of these beings, which I find tremendously evocative
While its stats aren't much to write home about, thanks to its Landfall ability, whenever a land enters the battlefield under its owner's control, its owner may gain control of the target creature for as long as Roil Elemental remains in play
Once its online, you can sacrifice lands to draw cards
Journey into Nyx Standard | Eric Rill Planeswalkers (7) 1 Jace, Memory Adept 2 Elspeth, Sun's Champion 4 Jace, Architect of Thought Spells (26) 1 Negate 1 Syncopate 2 Celestial Flare 4 Azorius Charm 4 Dissolve 4 Sphinx's Revelation 4 Supreme Verdict 1 Banishing Light 4 Detention Sphere 1 Elixir of Immortality Lands (27) 5 Island 5 Plains 1 Temple of Deceit 1 Temple of Silence 3 Mutavault 4 Azorius Guildgate 4 Hallowed Fountain 4 Temple of Enlightenment Sideboard (15) 2 Nyx-Fleece Ram 1 Deicide 2 Celestial Flare 1 Aetherling 1 Blind Obedience 1 Dispel 1 Negate 1 Pithing Needle 2 Gainsay 3 Last Breath While he definitely fits there, Nyx-Fleece Ram has potential in a main-deck slot
The stock is made by a small number of mills and printed by large card manufacturers like Cartamundi under contract with Wizards