If a Fusion Material Monster is declared, it cannot be used in a Fusion Summon. Prohibition: If a Fusion Monster is declared with ' Prohibition', it cannot be Fusion Summoned from the Extra Deck with ' Polymerization'.Non-Spellcasting Area: While ' Non-Spellcasting Area' is active, you cannot use face-up monsters on the field, except Effect Monsters, for ' Polymerization' or Ritual Spell Cards.Macro Cosmos: You can activate ' Polymerization' while ' Macro Cosmos' is active on the field because sending Fusion Material Monsters to the Graveyard is an effect of ' Polymerization' and not a cost.King of the Swamp: If you use ' King of the Swamp' as Fusion Material from your hand, you do not get to activate its effect to search your Deck for ' Polymerization'.King of the Swamp: You can activate the effect of ' King of the Swamp' even if all 3 of your ' Polymerization' cards are in your Graveyard.King of the Swamp: You can only get 1 copy of ' Polymerization' when you discard ' King of the Swamp' from your hand.You cannot use ' Horn of Heaven' to negate a Special Summon from. Horn of Heaven: ' Horn of Heaven' cannot be used to negate a Special Summon that results from a Spell, Trap, or effect of an Effect Monster Card.Fusion Recovery: ' Fusion Recovery' targets 1 monster and 1 ' Polymerization' in the Graveyard (so it will be negated by ' Necrovalley' or ' The End of Anubis').Fusion Recovery: You can use ' Fusion Recovery' to retrieve a Fusion Material Monster that was Summoned with ' Power Bond', ' Fusion Gate', ' Polymerization' etc.(This does not apply to Fusion Monsters Special Summoned by the effects of other cards, such as ' Magical Scientist' or ' Summoner of Illusions'.) So they may be the target of ' Monster Reborn', ' Call of the Haunted', etc. Fusion Gate: Fusion Monsters Special Summoned without ' Polymerization' while ' Fusion Gate' is on the field are still considered properly Summoned by a Fusion Summon.Disturbance Strategy: You can also chain ' Disturbance Strategy' to ' Polymerization' and, if the opponent no longer has the Fusion Material Monsters (if they were in his/her hand for example) then the effect of ' Polymerization' disappears.They were previously considered official and can still be correct, as long as they follow the official gameplay rules, or unless Konami has issued a ruling that says otherwise. These TCG rulings were issued by Upper Deck Entertainment and have since been deemed unofficial by Konami. If ' Polymerization' is activated while ' Macro Cosmos' is active, then the Fusion Material Monsters to be sent to the Graveyard will be removed from play instead, and the Fusion Monster will still be Fusion Summoned from the Extra Deck. Macro Cosmos: You can still activate cards like ' Polymerization' or ' Power Bond' and Fusion Summon while the effect of ' Macro Cosmos' is active and removing from play the Fusion Material Monsters instead of having them sent to the Graveyard.King of the Swamp: If you have no copy of ' Polymerization' in your Deck, you cannot activate the effect of ' King of the Swamp', and you cannot activate ' Fusion Sage'.However, ' Solemn Judgment' can also negate the activation of a Spell/Trap Card, so it can negate the activation of ' Monster Reborn' or ' Polymerization' itself. Example: Cards like ' Thunder King Rai-Oh' cannot negate the Special Summon by the effects of ' Monster Reborn' or ' Polymerization'.

$macro cosmos in pendulums$

The effects of ' Thunder King Rai-Oh', ' Black Horn of Heaven', ' Solemn Judgment', and similar cards cannot negate a Special Summon by another card effect.When doing so, you must show it to your opponent to confirm that it is a proper Fusion Material. When Fusion Summoning with ' Polymerization', you can use a monster which is face-down on the field as a Fusion Material monster.The effect of ' Fusion Recovery' targets a total of two cards: one ' Polymerization' and one Fusion Material Monster.

You can use face-down monsters as Fusion Material Monsters.

Macro cosmos in pendulums