It's likely you're thinking of a fake or counterfeit card. Many counterfeit Yugioh cards are produced in Asia, and they may sometimes use English text.
Here's why an official Asian English version is highly unlikely:
* Regional Distribution: Konami, the company that produces Yugioh cards, typically uses regional language versions for their products. This means English-language cards are distributed in English-speaking regions (like North America, Europe, etc.), while Japanese-language cards are distributed in Japan, and so on.
* No Official Need: There was no official need for a separate Asian English version of Black Magician. It was part of the original English set (Legend of Blue-Eyes White Dragon) and has been reprinted in many other English sets since then.
If you have a card that looks like an Asian English Black Magician, it's best to assume it's fake. You can check its authenticity by comparing it to images of real cards, examining the printing quality, and checking for any signs of inconsistencies (like misaligned text, blurry artwork, or unusual card stock).
Be wary of buying Yugioh cards from unofficial sources, as counterfeit cards are common. It's best to stick to reputable retailers or online marketplaces to ensure you're getting genuine products.