At the beginning of the Horde's precombat main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Vitality Salve is put into a graveyard from anywhere, each player returns a creature card from their graveyard to the battlefield.

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated. That creature's controller may sacrifice a permanent for that player to ignore this effect until end of turn.
: Return Volrath's Curse to its owner's hand.

, : Creatures of the creature type of your choice attack this turn if able.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
: Whispering Shade gets +1/+1 until end of turn.

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip

Target player sacrifices an attacking creature.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Destroy target creature with flying.

Flying
At the beginning of each player's upkeep, that player sacrifices a creature. If the player can't, sacrifice Woebringer Demon.

Flying
Shroud (This creature can't be the target of spells or abilities.)

Enchant creature
Enchanted creature gets +2/+2 and has flying and shroud. (It can't be the target of spells or abilities.)