Gravekeeper's Heretic
Level 4 DARK/Spellcaster Effect Monster1800 ATK / 1500 DEF
This card on the field is unaffected by all other card effects, as long as "Necrovalley" is also on the field.
Printings:
Legacy of the Valiant: LVAL-EN084 (Rare) - 2014-01-242014 Mega-Tin Mega Pack: MP14-EN241 (Rare) - 2014-08-28
Prices:
Cardmarket: 0.78 €TCGplayer: $ 0.56