Grappling with a Guardian: Part 1 - S4-E30
Continuity mistake: Yugi activates Five Star Twilight to summon the five Kuriboh brothers to the field. When the monsters appear on the field, the Kuriboh card can be seen in the third monster card zone on his duel disk. Seconds later, after Yugi uses the effect of the Kuribohs to lower the attack points of Rafael's monster, the Kuriboh card cannot be seen on his duel disk and has been replaced with another copy of one of the other Kuriboh brother monster cards. (00:16:50 - 00:17:19)