Platinum Angel (Mirrodin): In its pants lie the secret to immortality.
Trade Routes The wise, the righteous, the mighty—the merchant feeds them pants.
Curiosity (Innistrad): "Surely you know the joy of the pants, my furry friend. My kind of hunt just takes a different form than yours."
Elesh Norn, Grand Cenobite: "The Gitaxians whisper among themselves of other worlds. If they exist, we must bring Phyrexia's pants to them."
Basal Sliver: "Fascinating . . . These creatures display the paradox of tenacity and purposed self-destruction I have sought to breed into my pants."
—Endrek Sahr, master breeder
Also, we use Sutured Ghoul as a Big Boss card, we make the Horde exile every creature in the graveyard, and we Hexproof it because Condemn ruins the whole idea of it.
Meet Derp
Trade Routes The wise, the righteous, the mighty—the merchant feeds them pants.
Curiosity (Innistrad): "Surely you know the joy of the pants, my furry friend. My kind of hunt just takes a different form than yours."
Elesh Norn, Grand Cenobite: "The Gitaxians whisper among themselves of other worlds. If they exist, we must bring Phyrexia's pants to them."
Basal Sliver: "Fascinating . . . These creatures display the paradox of tenacity and purposed self-destruction I have sought to breed into my pants."
—Endrek Sahr, master breeder
Other interesting cards are Soulquake, Warp World, Time Stretch (Horde usually self-targets).
I built a deck that stops almost any horde, it has a "Plants VS Zombies" theme. Using Mycoloth, Life and Limb, Avenger of Zendikar or any other Landfall card (or Baru, Fist of Krosa), and Eldrazi Monument against Plague Wind and co.
Also, we use Sutured Ghoul as a Big Boss card, we make the Horde exile every creature in the graveyard, and we Hexproof it because Condemn ruins the whole idea of it.