Trash for Treasure [Commander 2016] Contraption "Yavimaya seems to conjure hers

"Yavimaya seems to conjure hers out of thin air

Set: Onslaught Type: Creature — Human Cleric Rarity: Uncommon Cost: {2}{B} {B}

it fights another target creature

Set: Unglued Type: Artifact Creature — Bird Rarity: Uncommon Cost: {3} Flying

Set: Aether Revolt Prerelease Promos Type: Sorcery Rarity: Rare Cost: {4}{G}{G} Draw cards equal to the greatest power among creatures you control

Trash for Treasure [Commander 2016] Contraption "Yavimaya seems to conjure hersSet: Commander 2016 Type: Sorcery Rarity: Rare Cost: {2}{R} As an additional cost to cast this spell, sacrifice an artifact. Return target artifact card from your graveyard to the battlefield. Goblins generally have two possessions: one per hand.