Far too powerful for the Duel Links meta. Non-destruction removal when it's summoned (easily, considering its synergy with cards such as Cyber Petit Angel, Senju of the Thousand Hands, etc.). Recycles Machine Angel Ritual (Limited) at the end of the turn, effectively making the Limitation of MAR pointless. Even with MAR limited, Cyber Angels ran riot over the November 2017 KC Cup, to the point where the 7 most used card spots were taken up by the deck's key cards. This limitation forces CA users to either run no MAR or no Dakini, making the deck unable to dominate like it did.
Cyber Angel cards were first added in the GX update, and to say that they were overpowered is an understatement, as the deck shot immediately to Tier 0 status. Makes Cyber Angels infinitely harder to destroy, removing one of the few counters the deck has.
"Téa Burn" decks comboed this with Cup of Ace (which would either stuff your hand or help them draw into their stronger cards) and Téa's skill "Duel, standby!" which added a card to each player's hand. Combined with other burn cards, this led to OTKs and made up the first truly hated deck archetype in Duel Links. Was the first card to be Limited.
Another card that enabled burn decks, being used to freeze your monsters while the opponent used Amazoness Swords Woman to deal major damage to you due to your monster's over-inflated stats.
Very powerful revival card that combos well with Red-Eyes Insight and/or Cards of the Red Stone. Limited to curb the spread of identikit Red-Eyes decks.
This was created so that people didn't need to wonder why cards were limited in Duel Links. Yes, the table is taken from the OCG/TCG reasons page. No, it really doesn't matter.