The reason is simplejust by returning a Pokemon card from your hand to your deck, you can search for any Pokemon card you want, making it a true game-changer
Much like Crested Sunmare, this checks on everyone's end step, so find some ways to gain 5+ life at instant speed on opposing players' turns (or block and pump)
Basically, you can not only see the future, but also invest in it
You'll be able to "remotely" attack with Alakazam ex instead of your Active Pokemon
Like most Pokmon cards, the value of Steelix depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Plasma Freeze)
Reddit user u/Sability, for instance, noted how Esika being a cute to brute is an insane flavor fail, imo