FWIW I vote for something similar to triple Triad but not triple triad exactly....
Create a new card game... maybe using only beast tribe cards.... Similar to the Suits in a real deck of cards
Instead of hearts, Diamonds, Spades and Clubs....
Amalj'aa, Ixali, Sahagin, Sylph, Qiqirn, Goblin and Kobold
7 suits....
and the only way to get the card drops is to kill the actual beast tribes....
Since they are supposedly increasing beast populations everywhere