Powerline - World's Greatest Rock Star (110)

Shift 4 {I} (You may pay 4 {I} to play this on top of one of your characters named Powerline.)
Singer 9
MASH-UP Once during your turn, whenever this character sings a song, look at the top 4 cards of your deck. You may reveal a song card with cost 9 or less and play it for free. Put the rest on the bottom of your deck in any order.