"Announcing Cowboy Bebop Promo Cards"
This potent combination of abilities makes opposing removal spells and blockers largely irrelevant, and a single attack can be enough to end the game on the spot
The instant costs four, you exile a targeted nontoken you control, the top two cards, and then cloak them as 2/2 face down dorks with ward
Other than that, it was more or less the same dominance as in Standard: Boros energy and its three color variants immediately shot to the top rank for both usage and winrate, the various build-around energy cards all proved to be at least viable, and even control decks adopted the new energy-based interaction
That is roughly nine times less common than Mystery Boosters rate of giving you a certain card
There are loads of other good lands this card could be used against, from the Channel lands like Otawara, Soaring City to the premier land removal card Wasteland