Dungeon Descent (Ampersand Promo) [Dungeons & Dragons: Adventures in the Forgotten Realms Promos] BT2-084 Scholars say that arbiters exist

Scholars say that arbiters exist on every world

+1: Put three +1/+1 counters on up to one target noncreature land you control

except it's a 4/4 black Zombie Cat with no mana cost

Set: Masters 25 Type: Land Rarity: Rare {T}: Add {C}

Set: Shadowmoor Type: Enchantment Rarity: Rare Cost: {3}{B}{B} Whenever a land enters the battlefield under an opponent's control

Dungeon Descent (Ampersand Promo) [Dungeons & Dragons: Adventures in the Forgotten Realms Promos] BT2-084 Scholars say that arbiters existSet: Dungeons & Dragons: Adventures in the Forgotten Realms Promos Type: Land Rarity: Rare Dungeon Descent enters the battlefield tapped. {T}: Add {C}. {4}, {T}, Tap an untapped legendary creature you control: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)