Hallowed Fountain

({T}: Add {W} or {U}.)
As Hallowed Fountain enters, you may pay 2 life. If you don't, it enters tapped.

Hurkyl's Recall

Return all artifacts target player owns to their hand.

Destroy target enchantment.
Fuse (You may cast one or both halves of this card from your hand.)

Destroy target artifact.
Fuse (You may cast one or both halves of this card from your hand.)

{U}, Sacrifice Aether Spellbomb: Return target creature to its owner's hand.
{1}, Sacrifice Aether Spellbomb: Draw a card.