The art stays crisp enlarged for a poster or shrunk to a party sticker, holding the bold colours either way
Regarding placement (also, Im not a tattoo artist, so this is just my laymans instinct), I could see this being an insane back piece, featuring the entire card art, or as a top of the thigh piece, featuring the Avatar only
The star attraction here is the guaranteed foil promo card of Mega Greninja ex
When this creature enters, target player gets four rad counters
The rest of the upgrades are just generally good cards: better lands, ramp, tutors, removal, and so on
A lot of that is thanks to Zurgo Stormrender, a three-mana creature that creates tokens but lets you either draw cards or drain your opponents whenever a creature token you control leaves the battlefield