The one exception is possibly with so many Eldrazi with cast triggers now you could use this to get your Ulamog or something else back that you want to recast if you have absurd amounts of mana but somehow no cards
The match-up against mono-white is a little weak.
Green's strengths are powerful creatures with trample, the ability to regenerate creatures (or bring them back from the graveyard), and getting lands faster (called ramping)
The late-game activated ability is a great way to come back from typical removal in a game to overwhelm opponents
Its controller may search his or her library for a basic land card, put that card onto the battlefield tapped, then shuffle his or her library
While vital to a Commander deck, I believe the counter magic, ramp, and other miscellaneous components should be up to the deckbuilder themselves to decide how they will tackle those elements