Colossal Fighter OTK A Colossal Fighter OTK Deck utilizes the ability of " Colossal Fighter " to revive itself by constantly attacking a stronger monster with " Colossal Fighter " . Deck Types . Colossal Fighter / Armory Arm OTK . Formally a popular Decktype in the " TCG " , this Deck originally involved equipping " Armory Arm " to an opponent ' s monster so that its ATK is increased to a point higher than that of " Colossal Fighter " , and then attacking that monster with " Colossal Fighter " continuously to inflict burn damage to the opponent . It was eventually in the " TCG " as well as the " OCG " , as the destroyed monster must be in the Graveyard when the effect of " Armory Arm " resolves in order to inflict damage to the opponent ' s Life Points . A legal version of this OTK exists that utilizes 2 copies of " Colossal Fighter " . While there is one copy of " Colossal Fighter " in the Graveyard , equip " Armory Arm " to an opponent ' s monster so that its ATK is increased to a point higher than that of " Colossal Fighter " , and then attack that monster with " Colossal Fighter " . Use the effect of one to revive the other from the Graveyard . Since you control " Armory Arm , your opponent will take 2800 damage each time " Colossal Fighter " is destroyed . Another alternate version of this Deck replaces the " Armory Arm " with " Junk Barrage " . Colossal Fighter / Fire Princess OTK . This OTK is achieved by activating " Rainbow Life " and then repeatedly attacking a stronger monster with " Colossal Fighter " while " Fire Princess " is face - up on your side of the field . Since all damage becomes Life Point gain by the effect of " Rainbow Life " , each time you attack , " Fire Princess " will inflict damage to your opponent . Recommended Cards . Monsters . Extra Deck Colossal Fighter / The Agent of Force - Mars OTK . You need to control " The Agent of Force - Mars " , " Colossal Fighter " , " The Sanctuary in the Sky " and have " Rainbow Life " Set . Your opponent must control an Attack Position monster with a higher ATK than " Colossal Fighter " . Activate " Rainbow Life " and then enter your Battle Phase . Declare an attack on your opponent ' s higher ATK monster with " Colossal Fighter " , causing it to be destroyed by battle . Due to " Rainbow Life " , instead of losing Life Points from that battle , you ' ll gain double the amount instead while " Colossal Fighter " is revived using its own effect . As " The Agent of Force - Mars " gains ATK equal to the difference in Life Points between you and your opponent while " The Sanctuary in the Sky " is in play , " Colossal Fighter " can be used to attack infinitely until your Life Points are high enough to OTK with it . Negating Trap Cards such as " Solemn Judgment " or " Divine Punishment " can be considered to prevent any interference from the opponent . Recommended Cards . Monsters . Extra Deck Colossal Fighter / Exodia OTK . In the Traditional Format , " Fire Princess " and " Armory Arm " can be replaced with " Card of Safe Return " , allowing the player to draw all five " Forbidden One " pieces . Weaknesses . The Summon or attack from " Colossal Fighter " can be easily stopped . Cards that negate attacks or Summons and cards that destroy can quickly stop the OTK . " Skill Drain " or " Destiny HERO - Plasma " can also stop the OTK : While the effect of " Colossal Fighter " will not be negated , the effects of " Armory Arm " and / or " Fire Princess " can . Spell / Trap destruction , such as " Mystical Space Typhoon " , can also destroy Equip Card s , easily stopping " Armory Arm " / " Junk Barrage " variants of this Decktype .