One Artifact stands alone in importance that made its last stand in Revised, until it was reprinted in Commander, and that Artifact is the Sol Ring
Fetch + shock manabase was a core of Dredge since the beggening of its existence
Path to Exile is the White entry on the list, and its one of the best removal spells of all time
Kabira Takedown and Sejiri Shelter are a bit more situationalthey might not be worthwhile if you're playing a deck with almost no creatures (which would be rare for a white-based deck), but they are worth playing in just about every deck with a reasonable number of creatures
It has, however, jumped up in value by 272%, going from just $1.10 to $4.10 in the past couple of weeks, according to MTG Goldfish's tracker
green cares about +1/+1 counters, has land creature synergies, and excels at triggering landfall