After extensive research by CGC, including conducting an infrared test, UV test, and X-ray fluorescence (XRF) spectrometer test, all of the chemical elements, most notably calcium, titanium, iron, copper and zinc, all correspond with a normal 1999 Base Set card
The most frequent reprints are present, like Sol Ring and Arcane Signet, as well as some less common ones, like Return of the Wildspeaker and Primeval Bounty
It is the only card in the format that can be played on your opponents turn, and can prevent them from doing something
You can get a counter from this even when it doesn't attack, and it's nice it can put the counter on itself too, as a 5/5 vigilance is pretty formidable
Exile the tokens at end of combat.) Whenever this creature attacks, for each opponent, tap up to one target creature that player controls