Although the floor of a Gray Ogre isnt something that most decks will want to play, a Gray Ogre that provides a powerful form of card selection is very much welcome in artifact strategies
Effects that allow you to cast a spell don't allow you to play a land
In any shell you play Sorin the Mirthless with, hell provide a steady flow of unconditional card advantage to help you take over a game
Its also really easy to break, as all you need is two creatures that can flicker each other, which not only produces infinite +1/+1 counters on your creatures, but also scales firebending up to make infinite mana when Zuko attacks
Gitaxian Probe A peek at your opponent's hand for virtually no cost and a fresh card to boot, Gitaxian Probe offers insight and advantage in formats like Legacy and Vintage
Some of those listings have pictures, while others do not, so its similar to TCGplayer in this regard