Ok so with pendulum monsters they each have a scale, the one that you got is 2 there. You can have different ones between 1 and 10, so you have to use 2 different numbers for pendulum scales then your able to pendulum summon monsters which is special summoning basically whos level are between the 2 pendulum scales. Say you have got I don't know stargazer magician and also performal joker in your pendulum scale, because they have scales between 1 and 8 you be able to pendulum summon monsters between level 2 and 7. Plus some of them have pendulum effects as well, I know one of the magicians can pop a face up monster, another magician can pop back row, one of the odd eyes dragons lets you summon another odd eyes if an odd eyes monster is destroyed by battle.
Transam universe deck is needed for galaxy deck got some good cards in there especially linac.
Ok so with pendulum monsters they each have a scale, the one that you got is 2 there. You can have different ones between 1 and 10, so you have to use 2 different numbers for pendulum scales then your able to pendulum summon monsters which is special summoning basically whos level are between the 2 pendulum scales. Say you have got I don't know stargazer magician and also performal joker in your pendulum scale, because they have scales between 1 and 8 you be able to pendulum summon monsters between level 2 and 7. Plus some of them have pendulum effects as well, I know one of the magicians can pop a face up monster, another magician can pop back row, one of the odd eyes dragons lets you summon another odd eyes if an odd eyes monster is destroyed by battle.