In a two-player game, Secret Rendezvous is worse than playing no card at all, but in a four-player game, its a great way to start an alliance to join up against a common enemy
The deck would be slightly worse, especially if you plan to cast white cards from the sideboard often, but it will still do the job
You may want to try experimenting with Slick Sequence or Stella Lee, Wild Card in a UR Commander deck
Of course, this only works while it has one or less Energy attached to it
From Darkuriboh, Dark Magician of Destruction, and Timaeus the United Magical Dragon, to Illusion Gate, Chronicle Sorceress, and Uzuhime the Manifested Mikanko, youll find something of interest in the wide range of new cards found in this set
The Adventure Continues Originally, I had all of the cards from Stranger Things Secret Lair in the deck, but over time, as I had to make hard cuts to add more D&D flavor, I ended up cutting Chief Jim Hopper and Max, the Daredevil from the deck, ostensibly because neither of those characters played D&D in the TV show