Libromancer Mystigirl

Level 4 LIGHT/Fairy Ritual Effect
1400 ATK / 2100 DEF

You can Ritual Summon this card with a "Libromancer" card. If this card was Ritual Summoned by using a monster(s) on the field, your opponent cannot target Ritual Monsters you control with monster effects. If this card is Special Summoned: You can target 1 face-up monster your opponent controls; until the end of this turn, change its ATK to 0, also negate its effects. You can only use this effect of "Libromancer Mystigirl" once per turn.

Rulings – Yugipedia

Printings:

Dimension Force: DIFO-EN086 (Super Rare) - 2022-05-19
25th Anniversary Tin: Dueling Heroes Mega Pack: MP23-EN111 (Common) - 2023-09-07

Prices:

Cardmarket: 0.07 €
TCGplayer: $ 0.06