Colossal Fighter OTK

This OTK requires at least 4 cards. Somewhat unreliable, you need to make sure the opponent has a monster in attack position stronger than your Colossal Fighter, and some things to look out for are attack stoppers like Sakuretsu Armor and Mirror Force.

Cards to Use:

Colossal Fighter Rainbow Life Fire Princess

Ok, Have your Colossal Fighter and Fire Princess Face-up on your field (Colossal Fighter in Attack Position) Activate Rainbow Life. Now, Since your opponent has a monster stronger than Colossal Fighter, Attack the monster, and gain life points with Rainbow Life's ability instead of lose them. Then, Fire Princess's effect will activate, dealing 500 points of direct damage to your opponent. While being destroyed by battle, Colossal Fighter's ability can revive itself, so do so (again in attack position) and attack the opponent's monster to repeat the process above. You've won the duel after Fire Princess reduces the opponent's life points to zero.

look out for:

Cards than negate attacks, special summons, and normal summons. (i.e Forced Back, Horn of Heaven) Cards that negate monster effects. (i.e Skill Drain) Cards that negate trap cards (i.e. Jinzo)