Hissing Miasma [Guildpact] SM53 The Walking Dead are the

The Walking Dead are the remains of freakish experiments by the Necromantic Lords

you may search your library for a Merfolk card

Set: Eventide Type: Creature — Elemental Spirit Rarity: Rare Cost: {3}{W/B}{W/B} Flying

Set: Eldritch Moon Prerelease Promos Type: Legendary Creature — Angel Horror Rarity: Mythic Cost: {2}{W}{W} Flying

Hissing Miasma [Guildpact] SM53 The Walking Dead are theSet: Guildpact Type: Enchantment Rarity: Uncommon Cost: {1}{B}{B} Whenever a creature attacks you, its controller loses 1 life. All that remains when the fog finishes are neat piles of polished bones, like acid etched glass. Orzhov servants collect them to make altar chimes.