While custom-made cards are not very common, youll see them on eBay as there are some very talented artists out there
Other cards with Dig Cards by Naoyo Kimura Frequently Asked Questions How can I obtain the Onix with 1-Diamond rarity from the Crimson Blaze set

+ Variable effects +, Only once per turn +, Requires control of specific archetype + and Requires control of specific Monster card type + Destroys your opponent's face-up Monster Cards +, Destroys your opponent's face-up Spell Cards + and Destroys your opponent's face-up Trap Cards + Tachyon Spiral of Destruction (en) +, (sc) +, Spirale de Destruction Tachyon (fr) +, Tachyonenspirale der Zerstrung (de) +, Spirale Tachionica di Distruzione (it) +, (ko) +, Espiral de Destruio de Tquion (pt) +, Espiral de Destruccin Taquinica (es) + and (ja) + Rmaji (Senmetsu no Takion Supairaru (ja)) + Tachyon Spiral of Destruction + Senmetsu no Takion Supairaru + Ative 1 desses efeitos (mas voc s pode u Ative 1 desses efeitos (mas voc s pode usar cada efeito de "Espiral de Destruio de Tquion" uma vez por turno); Se voc controlar um Monstro Xyz "Galxia": destrua todos os cards com a face para cima que seu oponente controla cujos efeitos foram negados. Escolha 1 card "Tquion" no seu Cemitrio, exceto "Espiral de Destruio de Tquion"

While some reprints do hurt the value of cards without actually adding much to Standard (Meddling Mage, Nantuko Shade, Haunting Echoes, etc.), the majority of reprints help bring new life to old cards