Mawile has one job in this list: retreat lock
Mana Base Upgrades Suggested Cuts: the slow fetch lands (Flood Plain, Grasslands), the 3-color tap lands (Frontier Bivouac, Jungle Shrine), the 2-color cycling lands (Irrigated Farmland, Sheltered Thicket), and Mossfire Valley Adding in the shock land cycle (Temple Garden, Overgrown Tomb), the fast fetch lands cycle (Bloodstained Mire, Misty Rainforest), and the original dual lands cycle (Taiga, Badlands) all help ensure youre getting untapped lands when you need them
Some of them are also introducing the series and the games to their children, creating a whole new generation of fans
It could race well, it could go wide, it could grind out value and go long, it could go big, it could go through, it was just a capable deck