In case youre wondering, it exiles your opponents creatures when your creatures die, until a player has no creatures
This card is stupid and its going to make a huge impact on EDH (Im calling it a bit early to say biggest impact of the set but its hard to imagine a bigger impact from another card) and the number of cards that just got a whole lot better is huge
Add in cards like Grave Pact that either punish your opponent or benefit you whenever you sacrifice Creatures, and youve got a decent gameplan
She costs one generic, one green, one white, and one blue mana to cast
Similar to Saheeli Rai / Felidar Guardian back in Kaladesh days, the mere threat of the combo warps gameplay around it
Its a hugely powerful card, but that does come at quite a cost eight mana in total