VIDEOS:
DK Mode
Kaiba uses his spell card to activate the cheat to make his head and Yugi's larger... which makes him unsure of how this would help him with the duel.
Example of:
Big Head Mode
Kaiba uses his spell card to activate the cheat to make his head and Yugi's larger... which makes him unsure of how this would help him with the duel.
Example of:
Big Head Mode