"Card Wars" is the second segment of the thirtieth episode of The Emperor's New School.
Everyone's into "Shuewocka Quest", a new card game. Kuzco inadvertently trades Kronk his best card, and then plans to get it back from him. He finally trades his "Kuzco-yo" (a yo-yo) to Kronk for the one-of-a-kind "Cuddles the Troll" card...which backfires when Kuzco discovers that, suddenly, "Shuewocka Quest" is out and "Kronk-o-yos" are in!
List of "Shuewocka Quest" cards
Cuddles the Troll
Dyral the Saber-cat
The Fortress of Fury
The Sagging Wand
The Sickly Wolf
The Well-lit Cave