After a few people bid on your card, they'll likely fight over it with competing bids raising your profit
A lot of the time you turn a creature into a land, but sometimes you turn an Ulamog into a Kozilek, and everybody laughs and then dies to eldrazi
Searching cards like Ultra Ball and Nest Ball look like great options to set up so we are going to add them as well
If a player is hopelessly behind on the board, wiping out all creatures will hurt the opponent much more than them, and that goes double for the Commander format, where multiple opponents might have stronger boards than the board wipe's caster
Library of Alexandria is one of the most powerful lands ever printed, and thanks to the fact it fits in every single Commander deck but can be obtained by very few, because of its rarity it had to be banned from the outset