pokemon go cards booster box Pokémon Pack and this radiant version features a sparkling new appearance that makes it truly stand out Pokémon TCG: Mega Evolution—Perfect Order

Edit: The context of these citations is also important and lends to the way the sources are working in the text

It can have a handful of purposes but its usually there for world building

Update I made a follow up article more focussed on making a deck with entirely custom art

Watermark: Sultai Illustrated by Jodie Muir Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp

Illustrated by Hannibal King Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp

So they ended up with flashback, but you can tap a creature to cast it for cheaper. WotC considers flashback as deciduous, or a mechanic that they plan to reuse fairly often (although not in every MTG set)