Throat Slitter [Betrayers of Kamigawa] Rivals of Ixalan Prerelease Promos and they gain "{T}: Add

and they gain "{T}: Add one mana of any color

Set: Worldwake Type: Legendary Creature — Merfolk Rogue Rarity: Rare Cost: {1}{U}{U} Islandwalk (This creature can't be blocked as long as defending player controls an Island

There's always room for one more

Creature Bond deals damage equal to that creature's toughness to the creature's controller

At the beginning of the upkeep of enchanted artifact's controller

Throat Slitter [Betrayers of Kamigawa] Rivals of Ixalan Prerelease Promos and they gain "{T}: AddSet: Betrayers of Kamigawa Type: Creature Rat Ninja Rarity: Uncommon Cost: {4}{B} Ninjutsu {2}{B} ({2}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Throat Slitter deals combat damage to a player, destroy target nonblack creature that player controls.