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

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

We never grow tired of swatting their bugs

Then target opponent may have you draw a card

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."