Sword of Light and Shadow [Modern Masters] Fate Reforged Scholars say that arbiters exist

Scholars say that arbiters exist on every world

Set: Arabian Nights Type: Creature — Efreet Rarity: Rare Cost: {1}{B}{B} Flying

Set: World Championship Promos Type: Creature — Human Barbarian Rarity: Rare Cost: {2}{R}{R} When Balduvian Horde enters the battlefield

After 891 samurai died in a single battle on its grasses

Sword of Light and Shadow [Modern Masters] Fate Reforged Scholars say that arbiters existSet: Modern Masters Type: Artifact Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2 +2 and has protection from white and from black. Whenever equipped creature deals combat damage to a player, you gain 3 life and you may return up to one target creature card from your graveyard to your hand. Equip {2}