Usually players will have to choose another card with the same character to use Shift, but in the case of Chip n Dale, Recovery Rangers, it can be used to Shift a Chip or a Dale card, which makes it quite a bit more versatile than a normal Floodborn card
Though it is low in ink cost to play, that doesn't make it low in monetary value
Righteous Confluence
Finally, there is the classic legendary character Mangara, which enters as a 2/4 Lifelink for four mana in and of itself not terrible
The basic conceit is this: youre a mighty wizard (player) and you use your book of spells (deck of cards) to battle your opponent until their health is depleted (their points are at zero.) With over twenty thousand cards at players disposal and almost 30 years of history, its a game with a high level of variance and replayability
So long as a card was printed at common at any point, it is legal in the format (excluding acorn-stamped, illegal, and banned cards)