Throughout the spoiler season for Unfinity, many MTG players were concerned about the sets Eternal-legal cards
Also I totally forgot about the matchprint cards, there is an Ampharos one of those as well and I believe only 2 (?) exist
Some, like those above, are as trustworthy as ever - but others aren't worth your time, either because the results are unreliable, they put you at too much risk of damaging your cards, or both
If this results in an illegal block (the example the card gives is a non-flying creature blocking a flying creature), then that block doesn't count
Fierce Guardianship (TLE) $51 Potentially free spells like Fierce Guardianship tend to find their way into competitive environments, and in cEDH, this card is a must-have to fight enemy combos, protect your commander from removal, or help your own key spells resolve
Assuming the staining isnt too bad, here are a few methods that might work for you: Use clear Scotch tape to pick up the specks