Chestack

A new multi-layered card game that fuses chess and fantasy
Divided into black and white camps, you rotate your cards alternately one turn at a time, defeating and absorbing your opponent's pieces, sometimes merging with your allies, summoning your opponent's cards, etc., and in the end, whoever takes the opponent's king wins.Included in anomalous Chess Variant.

By stacking (absorbing or merging) other cards, the movement of the stacked cards is also added and becomes a complex movement, so deep insight is required.
Stacked cards can become opponent's cards if you are not careful, and they may expand rapidly.
The hurdle is high, but by summoning cards, you can turn the tide at once.

—description from the designer