Shiny Pokmon are very popular
Every time your horrors deal combat damage, opponents mill that much, and at your end step, you can steal something from their graveyard that hit the yard that turn

Alpha Power 9 Black Lotus - Alpha: Casting cost aligned down - Beta: Casting cost aligned up and slight right Ancestral Recall - Alpha: Black ink centered, blue dots in "crescent" - Beta: Black ink aligned up and to the right, no blue dots in "crescent" Time Walk - Alpha: Black ink aligned left, no blue dots in "crescent" - Beta: Black ink centered, blue dot in "crescent" Timetwister - Alpha: Black ink more centered - Beta: Black ink aligned down and to the left Mox Ruby - Alpha: Black ink aligned down and slight right - Beta: Black ink aligned up and slight right Mox Jet - Alpha: Black ink aligned down and slight right - Beta: Black ink aligned down and slight left - Extra Note: Two lines of dots in lower left corner in Alpha, One line in Beta Mox Pearl - Alpha: Black ink aligned down - Beta: Black ink aligned up Mox Emerald - Alpha: Black ink aligned down - Beta: Black ink aligned up Mox Saphire - Alpha: Black ink aligned slight right - Beta: Black ink aligned slight right (less than alpha) - Extra Note: Alpha Sapphire's have a unique print error (see next section)
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In that next combat, Lagomos makes a new token, and the process repeats
When I wrote the first iteration of this list back in February 2004, the latest set included was Mirrodin