Quest Monster

Quest Monsters are monsters stored in the Extra Deck. They have a darker blue to lighter blue gradient, and they can be Summoned by sending materials from the field to the GY, like most Summon mechanics. However, they do not possess a DEF value (like Link Monsters), but instead they have the indicator called EFF (Effect Power). The EFF of Quest Monsters that are Summoned without using other Quest Monsters as Materials (which are explicitly said in their materials, otherwise you cannot) is always 0, and it is increased by 1 each time you use a monster effect, and it gains 1 more (a total of 2) if you use this card's monster effect, besides the [BREAK] effect. The [BREAK] effect comes with a number, and it is unlocked if its EFF reaches that number as well as it has that many EFF or more. The EFF still remains even if the monster leaves the field, like the Points of Relay monsters.

Example

 * Rainbow-Eyes Eatos