Oath of Kaya [War of the Spark Prerelease Promos] Crab Turtle Crocodile Set: Outlaws of Thunder Junction:

Set: Outlaws of Thunder Junction: The Big Score Type: Artifact Rarity: Mythic Cost: {1}{R} When Legion Extruder enters the battlefield

— Target player loses 5 life

Narset of the Ancient Way deals damage equal to that card's mana value to target creature or planeswalker

Converter beasts were sent to ensnare as many of Ixalan's dinosaurs as possible

Oath of Kaya [War of the Spark Prerelease Promos] Crab Turtle Crocodile Set: Outlaws of Thunder Junction:Set: War of the Spark Prerelease Promos Type: Legendary Enchantment Rarity: Rare Cost: {1}{W}{B} When Oath of Kaya enters the battlefield, it deals 3 damage to any target and you gain 3 life. Whenever an opponent attacks a planeswalker you control with one or more creatures, Oath of Kaya deals 2 damage to that player and you gain 2 life. "So everyone gets what they truly deserve, I will keep watch."