River Serpent [Mystery Booster] Hippogriff Mount Set: The Brothers' War Type:

Set: The Brothers' War Type: Artifact Creature — Construct Rarity: Common Cost: {10} Prototype {3}{G}{G} — 3/5 (You may cast this spell with different mana cost

) At the beginning of combat on your turn

Set: The Brothers' War Promos Type: Legendary Creature — Legendary Creature — Human Artificer Rarity: Rare Cost: {1}{R} Haste

Skyscythe Engulfer can't be blocked by creatures with flying

Whenever one or more Ninja or Rogue creatures you control deal combat damage to a player

River Serpent [Mystery Booster] Hippogriff Mount Set: The Brothers' War Type:Set: Mystery Booster Type: Creature Serpent Rarity: Common Cost: {5}{U} River Serpent can't attack unless there are five or more cards in your graveyard. Cycling {U} ({U}, Discard this card: Draw a card.) Though the Luxa River brings life to Naktamun, it's not without dangers.