"Herald" Darkness (KS/W55-E010 R) [KonoSuba 2]

[AUTO] When this card attacks, choose one of your other "Adventurer" or "Magic" characters, and that character gets +X power until end of turn. X is equal to 500 multiplied by the number of other "Adventurer" or "Magic" characters you have. [AUTO] Encore [Put a character from your hand into your waiting room] (When this card is put into your waiting room from the stage, you may pay the cost. If you do, return this card to its previous stage position as REST)