Although they arent tournament-legal, the collectible cards each have unique mechanics
1 Traditional foil uncommon with the showcase Ring treatment (23.3%), a borderless scene common (41.8%) or uncommon (32.6%), or a Nazgl uncommon (2.3%) Here, you can open one of the listed cards in traditional foil (which can include the common and uncommon borderless scene cards found in Prerelease Packs and Bundles)
This human is especially potent at shutting down Grim Monolith and similar cards
They are just a hard to break through
Slimefoot did nothing wrong, don't go around bursting its friends
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