Speaking of ROM hacking, I'm also considering overhauling the game completely with new cards and other modifications, as I do have that capability
Blue Medicine
JUN July 15, 1998 CoroCoro Comic s August 1998 issue is published with 2 promo cards July 18, 1998 First Pokemon Movie Mewtwo Strike Back premieres in Japan July 19 - August 23, 1998 2nd Official Tournament Series Kamex (Blastoise) Mega Battle starts its regional tournament circuit
A few have shown up in black, like Enslave, or on gold creatures like Dragonlord Silumgar
That said, there are still plenty of ways to power it out in Mono-Black, including ritual spells and generic mana ramp like Ancient Tomb and Mana Vault
However, Ra's Attack points become equal to the Attack power of the monsters sacrificed