Evolution Monsters

Evolution Monsters are monsters that are within the Extra Deck and like Fusion Monsters (which are usually summoned with "Polymerization), Evolution Monsters are usually Evolve Summoned with the effect of "Time Twister".

Evolution Monsters can have 1 Evolve Material Monster, but will still need to use "Time Twister", and they may also have 2 or more, but only 1 of those would be a specific monster, the others being specified by type, level, or any other aspect of the card.