Galaxy Mirror Sage (Common)

FLIP: You gain 500 LP for each "Galaxy" monster in your Graveyard. When this card is destroyed and sent from the field to the Graveyard after being flipped face-up: You can Special Summon 1 Level 4 or lower "Galaxy" monster from your Deck or Graveyard in face-down Defense Position. Banish it when it leaves the field.