Unlike wizards, elves, goblins, and the like, which you can find all over fantasy, some elements of Magic, like the lotus, are only iconic for their role in MTG
Just some random three drop under this will allow you to quickly setup a board position and pressure so long as you can find 2 power to crew from your hand
The main downside is that it enters the battlefield tapped, which can occasionally be punishing but is a fair trade off for the massive upside of the land in our deck
Its been impactful in many formats, to the point that playing 20 more cards in your deck just to get the companion mechanic going seems like a good idea (sorry Commander players, you cant have a 120 card-deck)
(2015-02-25) You can choose a mode only if you can choose legal targets for that mode