Sudden Night

Creatures your opponents control get -1/-0 and creatures you control get +1/+0 until end of turn.
Upturn {c} (You may exile this card from your graveyard to add {c} your mana pool. Spend this
mana only to cast a spell of the same type as the card exiled.)
"Terriaum is not my only creation. This world's sun and moons were created by me, and are at my beck
and call."
-Saundra Syn