A 2 mana 2/2 creature that can be played in response to a fetchland like Wooded Foothills, a watered down version like Fabled Passage or Terramorphic Expanse, a ramp spell like Three Visits, or another means of cheating cards into play like Kodama of the East Tree in order to ramp out one Plains card from your deck is already good value
It's a poor answer to early threats, but the drawback drops off the later the game goes
Since our deck is a slow swimmer, we're packed with ways to repeatedly wash away our opponents' boards, letting us catch up to and get ahead of faster opposing decks
This is most useful from something like a Pro Tour where the various decks are typically well tested by good players but also often in isolation
Throne of Eldraine EV Summary Finally, the last step to your expected-value calculation is to add everything together
* The Ring can tempt you even if you don't control a creature