As the name suggests, creatures with regeneration dont die when dealt lethal damage and instead stay on the battlefield
Power Up Your Deck with the Yu-Gi-Oh
Forbidden Cards Forbidden Dimensional Barrier X TRAP Declare 1 monster card type (Ritual, Fusion, Synchro, Xyz, or Pendulum)
This seems like a super annoying card to deal with, and I can see all sorts of places it could work well, from the straightforward Amber/Emerald aggro deck that won first place at Worlds to Chernadog
Number Clues can be obtained through completing PvP Ranked Duels, or from finishing offline battles in Duel World
Unlike most cards, Umbreon VMAX has continued to rise in price rather than decrease after the hype of the set wore down