That means, essentially, that 'Fuck you, nuke the board' is a valid strategy for the computer to follow
Its remarkable just how often it has been largely impactful on combat, whether creating or breaking battlefield stalls, as well as combining with burn or combat tricks, such as Divine Deflection
UPDATE: Staffer Demosthenes here with a quick update on behalf of Justin
Here's your likelihood of getting items from this slot in the first Play Booster: 87.5% A common from the main set 9.38% A common or uncommon normal reprint from The List 1.56% A rare or mythic rare normal reprint from The List 1.56% A Special Guests card from The List Slot #810: Uncommon Cards These dedicated uncommon slots are exactly as they were in the Set Booster
it has its effects negated, also destroy 1 other monster they control. If you cant do A, you can still do B, and if you cant do B, you can still do A
Whenever a creature with myriad attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control