By sacrificing Mausoleum Wanderer, its controller can counter target Instant or Sorcery spell unless the opponent plays X, where X is Mausoleum Wanderer's power
(The clue is their unique set badge.) Indeed, like most Universes Beyond cards, they're not legal in Standard, and can only be played in eternal formats and Commander
To help balance this, Wizards of the Coast did call in some Legacy experts to make sure these would not be too overbearing, but potentially interesting
Kinjalli's Sunwing helps slow your opponents down to your level by making their creatures enter the battlefield tapped
So today Ill try to touch on some of the subtle rules traps I see cause the most crestfallen wait, really? moments in games
If there are a couple of problematic permanents on board, you can work with the other players to ensure theyre all dealt with