You see Orc Rider
"Orc arga Huummmak!"; "Grrrrrrr".
Notes
These mounted orcs are strong but can be tricked with Invisible. They don't drop Wolf Paws. Orcish Axe is easy to loot and sells for a good price at NPCs.
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Location
Orc Fort, Orc Peninsula and also near Dark Cathedral.
Strategy
If You are a Mage, use Invisible and runes, Stoneshower or GFB are useful because Orc Riders are usually found in groups, premium mages should try to use Terra Strike if possible to minimise waste.
Loot
0-90 gp, 0-3 Meat, Torch, Backpack, Wolf Tooth Chain, Orcish Axe, Studded Helmet, Battle Shield, Scale Armor (semi-rare), Obsidian Lance (rare), Warwolf Fur.