I find the Nazgul tedious in Commander - they add too much consistency and bean-counting to the average game, not to mention the financial aspect of collecting all nine
So its a bit more obvious when a Trainer card is good for its drawing or searching abilities
The main issue is going to be the back
(EDHREC Rank: #618) Much like Patron of the Moon, Multani benefits from a lot of cards that have been printed in recent years that care about the number of lands you play, so if green is more your speed, you should give this a consideration
Most decks in the game will not go above 40 cards to help with consistency, but some play styles, like the Lightsworn archetype or decks used That Grass Looks Greener before it was banned, can benefit from more cards
If you do, she cant quest for the rest of the turn