There was an old anime perhaps around 1990-2000, where the main character, a kid, with his friends transported into an unknown realm to fight monsters. I don't know the plot but they battling the monsters by summoning monsters from a card by inserting it to a device with 6 colored led light.
Each card has its own colour which represent the monster attribute (there are 6). A humanoid-lizard warrior monster with fire attribute and red skin is the main character's ace card. When a card inserted, the device's LED will light up correspond to the card colour.
Bakegyamon has similar mechanism but it isn't the anime I'm looking for.
There is no card game involved. Edit : turns out it's a card game anime filler season