Its power and toughness are equal to the number of Islands you control
Red/White/Black: The Grind (Aggro, Sacrifice, Aristocrats) Crackling Doom isn't much of an archetype indicator, but connoisseurs of Red/White/Black know that the color combination is known for copious amounts of removal
Blue has a bunch of cards that are in-jokes to the development process of the game, because, well, Blue is the 'smart' colour, right
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