Spawning Pool enters the battlefield tapped. {T}: Add {B}. {1}{B}: Spawning Pool becomes a 1/1 black Skeleton creature with "{B}: Regenerate this creature" until end of turn. It's still a land. (If it regenerates, the next time it would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)
![Spawning Pool [Urza's Legacy] | Grognard Games](http://grognardgames.com/cdn/shop/products/a18595cc-e167-562a-9231-c0cd974490cc.jpg?v=1637277797)
