what is the latest pokemon card set Pokemon TCG Holo Rare Value Pack Next Pokemon TCG Pocket expansions:

We're seeing the Secret Rare Calyrex Alternate Arts follow the same pattern as the Urshifus in Battle Styles

And with the addition of delve tacked onto Ancestral Recall, the number of spells you can cast every turn will be limited only by your mana, as opposed to you potentially running out of cards or flooding

The ability to counter two spells just shuts down any deck not heavily based on winning with creatures (which includes many combo decks as well as control however getting this into play and active before a combo deck kills you can be a challenge)

Note that's not just once/turn or just nontokens, that's them all

Its also important to note that it wasnt considered a keyword back then, just a normal descriptor of an attribute that some permanents had, up until Darksteel