Arena certainly has a large community behind it that loves to poke fun at the often glitchy and pay-to-win client
How do I know which sets are legal
In theory, you could play Invasion of Xerex to bounce something, use Yorion to blink the battlefield, and then use the battle to bounce Yorion, Sky Nomad, which would essentially let you blink your entire board each turn if you had enough mana
Making it a Level 3 Tuner will most likely backfire since Morphtronics already have Scopen (who is basically "Normal Summon Burei/BRD/PTD hurr durr") and Remoten (who can search other Morphtronics in obscure ways)
These Collector Booster Boxes include 12 Collector Boosters with each Collector Booster featuring 15 Magic: The Gathering cards
To give you an idea, here is one of his video of almost four years ago: I used to collect some easy to find misprints in the past, but currently Im only a yugioh rarity collector: collecting one of each rarity that exist in yugioh