Austere Command (Invocation) [Amonkhet Invocations] Coldsnap The harpies descended without mercy

The harpies descended without mercy upon Akros

With innovative stabilizing techniques

the griffins were forced to seek new territory lest their aeries be crushed between the massive stone monoliths

Phyrexians overcome

Set: Shadows over Innistrad Type: Instant Rarity: Common Cost: {1}{G} Untap target creature

Austere Command (Invocation) [Amonkhet Invocations] Coldsnap The harpies descended without mercySet: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {4}{W}{W} Choose two Destroy all artifacts. Destroy all enchantments. Destroy all creatures with mana value 3 or less. Destroy all creatures with mana value 4 or greater.