Drudge Skeletons [Alpha Edition] BW38 when an opponent's monster effect

when an opponent's monster effect is activated: You can detach 1 Xyz Material from this card

Set: Skyridge Type: Metal Rarity: Common Retreat cost: Colorless

Set: Base Set Shadowless Unlimited Type: Grass Rarity: Uncommon Retreat cost: Colorless

You cannot activate this card if your opponent''s Life Points are 3000 or less

When this card leaves the field

Drudge Skeletons [Alpha Edition] BW38 when an opponent's monster effectSet: Alpha Edition Type: Creature Skeleton Rarity: Common Cost: {1}{B} {B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.) Bones scattered around us joined to form misshapen bodies. We struck at them repeatedlythey fell, but soon formed again, with the same mocking look on their faceless skulls.