Choose target creature. Exile the top card of your library. You may have Spark of Creativity deal damage to that creature equal to the exiled card's mana value. If you don't, you may play that card until end of turn.
When Sparkcaster enters the battlefield, return a red or green creature you control to its owner's hand. When Sparkcaster enters the battlefield, it deals 1 damage to target player or planeswalker.
{R}, {T}, Discard a card: Create a 3/1 red Elemental creature token named Spark Elemental. It has trample, haste, and "At the beginning of the end step, sacrifice Spark Elemental."
When you encounter Spatial Merging, reveal cards from the top of your planar deck until you reveal two plane cards. Simultaneously planeswalk to both of them. Put all other cards revealed this way on the bottom of your planar deck in any order.
Sacrifice a creature: Put a charge counter on Spawning Pit. {1}, Remove two charge counters from Spawning Pit: Create a 2/2 colorless Spawn artifact creature token.
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.