Galaxy Mirror Sage

Level 3 LIGHT/Spellcaster Flip Effect Monster
0 ATK / 800 DEF

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.

Rulings – Yugipedia

Printings:

Primal Origin: PRIO-EN002 (Common) - 2014-05-16
2015 Mega-Tin Mega Pack: MP15-EN002 (Common) - 2015-09-17

Prices:

Cardmarket: 0.07 €
TCGplayer: $ 0.14