I arbitrarily decided to make the maximum price $5(-ish) as a starting point
This effect has a long history in Magic: Clone debuted in Alpha , giving us plenty of iterations to examine
How it works With this deck, you've got to hold the line until your cavalry arrives a few rounds into the game
It also doesn't apply to tokens with their own set of characteristics that enter the battlefield and copy a transforming permanent due to a replacement effect, like a Saproling token that enters as a copy of a transforming permanent due to a 712 A lot of players would be surprised to learn that meld cards aren't technically double-faced cards because their back face is, well, only half a card face
They are more color-intensive, so they can only be cast in a limited variety of Commander decks, but in return, they can destroy a wider variety of targets than mono-colored removal spells can
I'm not a fan of mechanically unique cards in Secret Lairs with their limited availability, and this approach is pretty much just official card alters - fairly inoffensive