I encountered a glitch where the gem boss thing. It attacked lance and he died but then came back to life and countered the attack. He was alive with 0 hp and the enemies had infinite turns. It kept attacking and summoning enemies even though i had 2 other people alive. It didn't give me a chance to attack, it just kept going till i list
Once i got improved arrow rain, and level 2 mana or w/e regen, i would win a game instantly. Just scroll over, use arrow rain like 5 times and then you destroy the base + commander unless he lives with a bit of health. Then it takes another 5 seconds.