The Peregrine Dynamo [Dominaria United Commander] Eldrazi Spawn Sacrifice six creatures named Shadowborn

Sacrifice six creatures named Shadowborn Apostle: Search your library for a Demon creature card and put it onto the battlefield

At the beginning of that turn's end step

When Murderous Rider dies

look at the top three cards of your library instead

The Peregrine Dynamo [Dominaria United Commander] Eldrazi Spawn Sacrifice six creatures named ShadowbornSet: Dominaria United Commander Type: Legendary Artifact Creature Construct Rarity: Rare Cost: {3} Haste {1}, {T}: Copy target activated or triggered ability you control from another legendary source that's not a commander. You may choose new targets for the copy. (Mana abilities can't be targeted.) Jhoira stumbled upon an ally, not just a good source of spare parts.