Gravekeeper's Priestess

Level 3 DARK/Spellcaster Effect
1000 ATK / 1500 DEF

While there is no face-up Field Spell, the field is treated as "Necrovalley". All "Gravekeeper's" monsters on the field gain 200 ATK/DEF.

Rulings – Yugipedia

Printings:

Absolute Powerforce Sneak Peek Participation Card: ABPF-ENSP1 (Ultra Rare) - 2010-02-06
Absolute Powerforce: ABPF-EN000 (Super Rare) - 2010-02-12
Legendary Collection 4: Joey's World Mega Pack: LCJW-EN258 (Rare) - 2013-10-11
Speed Duel Starter Decks: Destiny Masters: SS01-ENB07 (Common) - 2019-01-24
Speed Duel Tournament Pack 1: STP1-EN017 (Super Rare) - 2019-04-18

Prices:

Cardmarket: 0.25 €
TCGplayer: $ 0.32