Taking a Step Once More, Mio (IMC/W41-E014 U) [The iDOLM@STER Cinderella Girls]

[AUTO] When this card is placed on the stage from your hand, choose one of your other «Music» characters, and that character gets +X power until end of turn. X is equal to 500 multiplied by the number of other «Music» characters you have. [AUTO] When this card attacks, if a card named "Fan Letter" is in your climax area, you may choose one of your other REST characters, and return it to your hand.