It is empirically easy to see that virtually every single new card, no matter what edition, variant, or special treatment, has a few misprints available
While songs with the keyword Sing can only be sung by one character, songs with the Sing Together keyword can be sung using any combination of characters in play, so long as the total ink cost of those characters equals or exceeds the cost of the song
Threats are any cards that swing the game greatly in your favor when you play them
Each player that had something exiled then gets to cloak the top of their deck
Planeschase cards are typically played horizontally, with special rules that represent a planeswalker traveling from plane to plane while dueling
Its a sick one to cheat into play with cards like Bolas's Citadel