Prophetic Prism [Mystery Booster] Mordenkainen return it to the battlefield

return it to the battlefield under its owner's control with an oil counter on it

This explains why the goblins remain unaffected

Then target opponent may have you draw a card

“If that brain can't figure out the secret of the serum

Set: Streets of New Capenna Promos Type: Creature — Avatar Rarity: Rare Cost: {4}{G}{W}{U} When Soul of Emancipation enters the battlefield

Prophetic Prism [Mystery Booster] Mordenkainen return it to the battlefieldSet: Mystery Booster Type: Artifact Rarity: Common Cost: {2} When Prophetic Prism enters the battlefield, draw a card. {1}, {T}: Add one mana of any color. "The explorer who found it got a bad deal when he sold it. He merely got rich."