The comparison between these two cards doesnt result in one being obviously better, but Iymrith is a mono-color card which makes it easier to fit into most Cubes
During a game, at the bottom of the screen, you can select to add a "stop" during various turn phases to create the illusion that you have a card to play in response
From those three cards, you can add one to your hand and put the remaining two on the bottom of your deck in any order - a clever way to find what you need, quickly
When its removed, it replaces itself with a token that is almost as good, meaning its a lot of value for its mana cost
Slot #12: Land This slot will always hold a basic or common land from the main set
The biggest problem with it is being in both white and blue really restricts the amount of decks it can go in, and since you're in blue you likely have better draw engines