While it might sound silly to make your opponent draw a potentially useful card, the steep number of 20 would all but guarantee them milling out and being unable to do anything with whatever they draw
At the start of each end step, if youve made a token of any type, you get to draw a card
The Blood Crypt from Dissension also drives up cost, at over $15 each for the red-and-black rare land
This makes Grim Backwoods particularly useful in decks that benefit from creature sacrifice mechanics, often seen in black and green decks where creatures can be reanimated or their death triggers are advantageous
Rares Summon: Brynhildr: Its fairly easy to get the card back from this in Limited, and even better if you can trade it off after
Cavern-Hoard Dragon may be expensive at eight mana, but it also could be a huge payoff when playing against any artifact deck, as its damage trigger makes you a Treasure token for each artifact they control