Akroma's Vengeance [Onslaught] Kaladesh Prerelease Promos the River Merfolk were known

the River Merfolk were known for their stoicism

Set: Dissension Type: Creature — Spirit Rarity: Uncommon Cost: {2}{W} Azorius Herald can't be blocked

Set: Urza's Saga Type: Creature — Hippo Rarity: Uncommon Cost: {3}{G} Islandwalk (This creature can't be blocked as long as defending player controls an Island

Set: Tempest Type: Artifact Rarity: Rare Cost: {4} {4}

Akroma's Vengeance [Onslaught] Kaladesh Prerelease Promos the River Merfolk were knownSet: Onslaught Type: Sorcery Rarity: Rare Cost: {4}{W}{W} Destroy all artifacts, creatures, and enchantments. Cycling {3} ({3}, Discard this card: Draw a card.) Ixidor had only to imagine their ruin and Akroma made it so.