FairFamily

Well it is every type of extra deck monster. In ARC-V the main focus was on all the extra deck monsters and the main character and his rival could do all of them thanks to the pendulum summon. 

With vrains link summoning was introduced and all other extra deck types nerfed. So as a tribute I performed all extra deck summons including link starting from a pendulum summon.

Yu gi oh meta is indeed not that easy to get into but it is not as difficult as it looks. Power creep turns a lot of cards/archetypes obsolete. 

........I didn't even remember the correct name for the extra deck.......  

Considering my knowledge of the game stopped in 2004/2005 (until a few looks into more recent things).......yeah, most things from back then that didn't get some additional support later are probably long since obsolete. 

It's not too hard to get back into @seki108, the thing that's the hardest is building and learning your deck. and that is something some people can help with (just be happy he didn't show a Pre links Zoodiac board after one turn...)