32 cards where the text matches the regex /\b(orc|orcs)\b/

Barad-dûr (LTR)
Book of Mazarbul (LTR)
Brassclaw Orcs (ME2)
Dunland Crebain (LTR)
Dwarven Soldier (ME1)
Easterling Vanguard (LTR)
East-Mark Cavalier (LTR)
Foray of Orcs (LTR)
Gothmog, Morgul Lieutenant (LTR)
Gríma Wormtongue (LTR)
Grishnákh, Brash Instigator (LTR)
Ironclaw Orcs (ME2)
March from the Black Gate (LTR)
Mauhúr, Uruk-hai Captain (LTR)
Mordor Trebuchet (LTR)
Moria Marauder (LTR)
Olog-hai Crusher (LTR)
Orc General (ME2)
Orcish Bowmasters (LTR)
Orcish Captain (ME2)
Raiding Party (FEM)
Saruman's Trickery (LTR)
Saruman the White (LTR)
Sauron, Lord of the Rings (LTC)
Sauron, the Dark Lord (LTR)
Shagrat, Loot Bearer (LTR)
Snarling Warg (LTR)
Swarming of Moria (LTR)
The Mouth of Sauron (LTR)
The Torment of Gollum (LTR)
Treason of Isengard (LTR)
Uglúk of the White Hand (LTR)

In the blink of an eye, they strode from deep snow to the end of this search.