First things first, there are a LOT of zip files here (to make uploading easier)
Make sure to use a perfect fit sleeve for best results
While the obvious first home for Urza's Cave is Tron decks as a failsafe for games where it's difficult to assemble the three Urza lands necessary for the strategy's explosive mana acceleration , it's also interesting to consider what else Urza's Cave can do in decks featuring Knight of the Reliquary, Elvish Reclaimer, and the Modern Horizons 3 reprint Sylvan Safekeeper
manga and anime, under Battle City Rules, which applied during the Battle City tournament, Fusion Monsters could not attack the same turn they were Fusion Summoned
My perspective is messing with me on vintage
Dice Jar X LIGHT Level 3 [ Rock / FlipEffect ] ATK 200 DEF 300 FLIP: Both players roll a six-sided die