Your search for "rapid hybridization 198" revealed the following:
Rapid Hybridization - Special Guest: Kozyndan - Another Story (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: kozyndan Card Text: Special Guest: Kozyndan: Another StoryDestroy target creature. It can't be regenerated. That creature's...
Rapid Hybridization (SOC) from Secrets of Strixhaven Commander, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Jack Wang Card Text:Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.