As a result, telling cards from these sets apart can be tougher
They make the decks make sense both mechanically and thematically
These cards come from all over Magic and have their own set symbol: Even rarer, these artifacts also come in a schematic art, still in the retro frame: Rarest of all, and one of the rarest promos ever printed in a Standard Legal set in Magics history, you can find serialized double-rainbow foil Schematic Arts in boosters as well
When this leaves play (bounces, exiles, dies or tucks) you get everything back that you exiled save for the Core, and note that they come back tapped so if they were dorks they cannot block until your untap step
You can reveal duals and tri-lands with the type, though, so you've got some range on what cards you need with this one
Mega Evolutions evolve onto EX cards (such as Mega Metagross EX onto Metagross EX), and they end the players turn when evolving