The best white cards in MTG are the ones that reinforce that strategy instead of pulling the deck in three different directions
The power stats aren't anything to sneeze at either, since 5000 power is a respectable amount to work with considering the other benefits the card provides

France, 1830 Cardgame, 1853 Train Game, 20th Century, Abetto, Ad Astra, Age of Discovery, Airships, Alcazar, Alchemists, Alexandros, Amun-Re, Amyitis, Anno 1503, Antwerpen, AquaSphere, Archon: Glory & Machination,Arkadia, Around the World in 80 Days, Asara, Assult on Doomrock, Assyria, Atlantis, Atlas And Zeus, Attika, Augsburg 1520, Australia, Batavia, Before the Wind, Biblios Dice, Big City, Bora Bora, Bremerhaven, Briefcase, Bruxelles 1893, Cafe Melange,Camel up, Candamir, Capitol, Caravelas, Cardcassonne, Cartagena, Catacombs, Chinatown, City Hall, Clockwork Kingdom, Coal Baron, Colonia, Comuni, Coroporate America, Corsairs, Cuba, Cuba: El Presidente Exp., Cyrano, D-Day Dice, Defenders Of TheRealm, Die Macher, Dimension, Doge, Domaine, Dracula, Drako, Drunter und Dr??, Dune, Dungeon Guilds, Dungeon Lords, Dungeon Petz, Dungeon Roll, Dungeon Run, Egizia, Eketorp, El Grande, Endeavor, Era of Inventions, Euphrates & Tigris Card Game,Euphrates & Tigris: Contest of Kings, Exile Sun, Feudo, Fief: France 1429, Five Tribes, Flandern 1302, Florenza: The Card Game, Freight Train, Fresco, Ga

Turning your commander into an artifact provides an interesting sort of protection