Forsaken Monument [Modern Horizons 3 Commander] Fox Cleric When Glistening Oil is put

When Glistening Oil is put into a graveyard from the battlefield

Spells your opponents cast during your turn cost {1} more to cast

players will first fill all of their robot's "registers" with facedown movement cards

When Malakir Bloodwitch enters the battlefield

but I believe a more mundane power source might suffice

Forsaken Monument [Modern Horizons 3 Commander] Fox Cleric When Glistening Oil is putSet: Modern Horizons 3 Commander Type: Legendary Artifact Rarity: Mythic Cost: {5} Colorless creatures you control get +2 +2. Whenever you tap a permanent for C, add an additional C. Whenever you cast a colorless spell, you gain 2 life. "We shall forever roam." Ayli, high priest of the Eternal Pilgrims