What are forbidden limited cards in Yugioh?

Forbidden & Limited Cards are cards whose usage in official Yu-Gi-Oh! TCG tournaments is either prohibited or limited in terms of the number of cards with the same name allowed in a Deck.

Why are cards banned in Yugioh?

Mainly Forbidden due to abuse in the Nekroz archetype, where it was mainly used to Ritual Summon Nekroz of Clausolas, which can search Nekroz Cycle by its own effect, which can then Ritual Summon Clausolas from the Graveyard by using Djinn.

Why is metamorphosis banned?

Metamorphosis means that you can avoid using certain monsters that are required for certain fusions. Fusion monsters were often stronger than normal monsters because they were harder to summon. The reason Metamorphosis was banned was because it made it too easy to bring out powerful monsters.

Is Monster Reborn limited?

Monster Reborn has been placed back on the limited list: Target 1 monster in either player's Graveyard; Special Summon it. Why has such a powerful card been placed back on the limited list? Especially since it's effect let's you snatch a monster from either player's graveyard for free.