As a sorcery, you may pay the mana cost of a locked door to unlock it.) A creature attacks alone if it's the only creature declared as an attacker during the declare attackers step (including creatures controlled by your teammates, if applicable)
Set Boosters are the way to do it and an MTG Set Booster Box is the most cost effective method of purchasing them!
I can't tell you the number of Ghitu Slinger's I've sent back to my hand for another Shock to something with this
But even after you put in the work to transform your Human Werewolves, they can still transform back
Promo Set 2 has the first of these with Prince John Gold Lover from a special edition of Villainous: Introduction to Evil, and the Moana Adventurer of Land and Sea Movie Promo available from select cinemas for Moana 2
(The exact restrictions are more specific, but thats the general idea.) Other formats, such as Modern and Legacy, dont rotate at all, meaning the pool of cards that you can choose from grows with each new set release
