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 [Tenth Edition] | Lots Moore NSW](http://online.lotsmoore.com.au/cdn/shop/products/958ce2ba-a489-5aad-a0c1-0a2e77ab24f4.jpg?v=1654185138)
