That activated ability can be absolutely criminal, whether you use it to finish someone off or just to bring them down a peg
This means you can add effectively another poison counter to your opponent, but you can also add another loyalty counter to Nissa
Token makers are often underestimated, as are mill cards
At full power, it becomes a huge creature that drains each opponent for 2 life whenever you sacrifice a land
This is mostly relevant in post-sideboard games, where if you start dredging you will not be able to find most of your sideboard cards, but can also be relevant in Game 1 when you need to draw a mana source and/or dont have green mana yet
Lets start off with the Beyond Booster, which has only 7 cards: These boosters are not great value