Dungeon Dice Monsters: Part 1 - S1-E46
Continuity mistake: When Goblin Attack Force switches to defence mode after it attacks, Devlin has four cards in his hand. On Devlin's next turn, just as he goes to summon Gradius, there are six cards in his hand. Even if he drew one card at the start of his turn, there is still an extra card. (00:14:44 - 00:15:18)