Once again, this isn't inherently necessary, although much like Wonder Stamina, the time between new packs is quite long
Treacherous Trapezist is a three-mana Blue 2/3 creature with flying
For one red mana you give something +3/+0 until the end of the turn, which is already great, and then if it dies that turn you get to replace it with a 2/2 face-down card instead
That, to me, is enough to slot these pretty much anywhere you can find space
3 Self-Destruct Button For the most part, cards that are placed on the Forbidden and Limited List are there due to their overpowered effects, their interactions with other cards causing infinite loops, or how quickly they can turn the tide of a duel in the player's favor when played