mtg playtest card prices Transcantation [Mystery Booster Cards] Was given these test cards

Rin and Seri, Inseparable goes nuts with token generators like Release the Dogs, while Be'lakor, the Dark Master simply triggers more often if you can generate more demons from a single card like Great Unclean One or Demonic Covenant

As such, the cards reflect that change

There are 6 commons (38%), 7 uncommons (29%), 26 rares (22%), and 28 mythic rares (11%) that feature this stunning brand-new treatment

Also, they make all noncreature spells cost one more mana to cast, and thats nearly always enough to really annoy everyone sat opposite you

Its the only delirium card you want in your deck

When this gets a two for one in the early game it is nearly unrecoverable