The difference is that while they have an ink cost on them, there is also an extra block of text in the description area of the card which details that you can exert a character (turning them sideways and opening them to attack) of a minimum cost in order to play the song card for free
This effect means that this card is also treated as a level 6 card while it's flipped over from the deck by a "reveal cards from the deck" effect
If heads, discard the top 5 cards of your opponent's top deck
however, the ability Shift five allows you to place it on top of other Chip or Dale cards, reducing the cost by three
This leads to one player staring at the cards in their hand, wishing they werent lands seven through eleven, and the other player trying to figure out how to play around Torrential Gearhulk or some other haymaker
Command Performance Croakid Amphibonaut Decisions, Decisions Exchange of Words Fluros of Myra's Marvels Focused Funambulist Glitterflitter How Is This a Par Three
