Weve also seen some great enchantments printed (and reprinted) in Theros Beyond Death , Kaldheim , Adventures in the Forgotten Realms and their associated Commander decks, and theyre all viable
The cards already in your collection cannot be added to your decks, but rather you use what you get during the event, and with a couple exceptions, you add them to your collection afterward
Careful, though, as your opponent can also use these counters, regardless of who generates them
You can guarantee a legendary creature on board for Mox Amber, and a creature to sacrifice for Diabolic Intent, to give just a couple of examples
Every spell-based blue deck in all but the fastest formats are going to want this card for the foreseeable future
So, check out this pair