How to spot fake yugioh cards

here are some resources in case you do not know the cards well

1. From one of the most well known TCG card selling website TCGPLAYER -> LINK
2. Yugioh Wiki, a community knowledge base maintained by millions of players worldwide -> LINK

TLDR:

check the following with real cards on those 2 sites

1. name
2. font
3. color
4. card design
5. rarity
6. name; the most obvious give away to it must be repeated