Cloudstone Curio [Kaladesh Inventions] Worldwake Set: Legends Type: Enchantment —

Set: Legends Type: Enchantment — Aura Rare Cost: {2}{W}{W} Enchant creature Enchanted creature gets +3/+3

you may search your library for an Elf card

where X is 2 plus the sacrificed creature's mana value

target player may put Pir into their hand from their library

"The Haunted Palace"

Cloudstone Curio [Kaladesh Inventions] Worldwake Set: Legends Type: Enchantment —Set: Kaladesh Inventions Type: Artifact Mythic Cost: {3} Whenever a nonartifact permanent enters the battlefield under your control, you may return another permanent you control that shares a permanent type with it to its owner's hand. With innovative stabilizing techniques, Suja Pavani brings this piece of the sky itself to the Inventors' Fair.