You can scale how much mana you want to dump into it, or how many cards you want to exile, depending on your opponents open mana
Donald doesnt go down easy
Coffin Purge and Purify the Grave still don't seem worth the inclusion, while Memory's Journey looks pretty interesting as an enabler for baron-esque decks and incidental gy hate.
Take a real card and shine the light through at low setting to get a base read, then turn the setting up to high and blow through a counterfeit card and get a similar showing
Its not ideal in decks with smaller creatures, like Elves of Goblins, but more expensive creatures like Krakens, Leviathans, or Eldrazi will make exceptional use of this artifact
If you have at least 6 lands, easy enough in casual land, then you can ultimate on the turn you drop it, and then play, for free, any artifact like Blightsteel Colossus from your hand (or graveyard in case you surveilled it there.)