The quiz
Each battle is 5 questions about your opponent's animals, 15 seconds each. Right answer: your card hits their health bar. Wrong answer or time up: their card hits yours. Each side has 100 HP: empty their bar, or finish with more HP than them. On a tie, the defender wins.
Your team
Your team of 5 animals is used in attack and in defense. The rarer an animal, the harder the questions about it. A card's ATK raises its damage, its DEF lowers the damage it takes.
Rewards
Every battle earns XP (10 for a win, 4 for a loss) and moves your season track forward, which gives boosters. The daily challenge adds +60 XP. At the end of the season, you get boosters based on your league.
Your defense
While you're away, other players answer questions about your animals: when they get it wrong, you gain points.