>>239932274>>239936082Sorry, didn't read the first part. Pendulum Summoning is a mechanic where there exist Pendulum Monsters, which are normal and effect monsters with an additional attribute. When placed on the Pendulum scale on the board (there's 2 per player), they behave like continuous spell cards using a secondary set of effects printed on the card. When destroyed, they goes face up on your Extra Deck rather than the graveyard. They also have a numerical unit called the scale value, ranging from 1 to 13. When you have 2 scales played on the board, once per turn you can special summon monsters from your hand and faceup extra deck with levels between the scale value (i.e. you set up 2 on one side and 7 on the other, you can summon level 3, 4, 5, 6).
Because it takes playing 2 cards (with initially mediocre pendulum scale effect) to even setup the scales its designed to be a slow starting lategame big payoff kind of mechanic. But its too slow for competitive, so they released card to speed up the process, which breaks the mechanic because suddenly its not slow to start anymore.
Link era broke its kneecap by making the pendulum scale part of your regular backrow rather than 2 extra slots on the field + making it so that you can only summon Pendulum monster into zones pointed to by Link Monsters, severely limiting both spam decks, and decks that uses the zone as an extra continuous spell card.