Here's my suggestion
Why not add a pokemon uno at the game corner
Here are the rules
1 The first player to lose all of their cards wins
2 each player pulls 8 cards from the deck at the start
You can only take from the deck if you have nothing
For example "the enemy puts a brown eevee number 4 but you don't have a yellow card or an eevee number 4" you can pull from the deck 2 times if you get nothing you don't do anything on the turn
3 you can put regular cards, and cards that swaps the turn loop only if the card the enemy put and the card matches the color or number/ the same symbol
Now to move on the cards
Regular cards
Eevee
numbers 1-10
color brown
Pikachu
numbers 1-10
Color yellow
Psyduck
Numbers 1-10
Color purple
Onix
Numbers 1-10
Color gray
Swap cards
Porygon z
Color gray
Swaps the turn line up
Alakazam
Color purple
Swaps the turn line up
Special effect cards
Arcues
Allows you to swap the card just placed by your enemy by the last
Garatina
Allows you to look at 2 random cards of the enemy for a short amount of time
Gardevoir
Gives you 1 random card that you played back
Gallade
Discards 2 of your cards you can choose which ones to remove
Lunatone /solrock
Adds two cards for your enemy
Note: boost cards can be placed at any card