For Box Openers The EV math is unfavorable (see below), as with most S-series boxes at current prices
She deepened my cardpool by a significant margin, plus her tutor ability made her an incredibly attractive commander
And it can be great for Limited and Constructed play
As a defensive card, it also shines: keep your guys from dying to removal, or reuse a comes-into-play creature
When Gwenom attacks, you can cast the top card of your library that turn, and you can pay life instead of mana if you so desire
Its the ideal thing to collect, which means, if youre a fan of Pokmon (and, with Pokmon being the literal highest grossing franchise of all time, you probably are), youve probably delved into the world of Pokmon TCG