Pokmon TCG Pocket developers noted that there was an interest for more robust competitive play and ranked matches seem like an easy solution until the game is eventually incorporated into an official competitive league similar to the physical Pokmon TCG
Interestingly, while we're talking about print, these principles of clear visual communication carry over into the digital world
Mage Slayer Mage Slayer gives the equipped creature an ability I like to call first first strike. As in, it deals damage when you declare it as an attacker, before your opponent even gets to declare blockers
Boss's Orders can select a Pokmon on the opponent's bench and move it into the active spot, which can force the opponent to give up the final two prize cards that it takes to lose the game
[P][C] Mind Bend 60: Your Opponent's Active Pokmon is now confused
That's all there is to know about the Night Wanderer set for the time being, but additional cards will inevitably be revealed prior to its release