digimon 1999 cards Old Card Mugendramon Rare Bo-136 1枚 (Used) （1793934369）| magi -TCG Marketplace- Greymon St-2 Digimon Card Game

CGC has seen numerous examples of this error type from the Shadowless Base Set, as well as the non-holo Base Set 2 Charizard pictured above

Yes, such digivolving is still possible

Dark Contracts drain your Life Points each turn

With a Cardmarket low Booster Box price of 83, we have a situation very similar to Obsidian Flames

However, it's not that it can't be used as a wall, so it's a reasonably usable card

The only time you can deplete the opponents life points is when there are no monsters defending the opponents side of the field and your monster attacks, if your monster attacks another monster with lower attack points or if the effect of a trap or spell card says so