Lore: After Raynor's expedition in the Outlands, several Confederate scientists travelled into Horde territories to observe native inhabitants, eventually coming across the muscular beauty of the Tauren tribes. Intrigued by their physique, they offered a select few Tauren the opportunity to travel into space to test their extraordinarily high-specced suits.
Cow is a versatile hero, who, while usually is played as a Burst Caster, can also fill as a secondary dps or tanky utility. His E allows him to plow through creepwaves, as well as making him a passive counter to summoners, and his R gives him global pressence. Max E first, as it will help with farming, especially once you have your ult. Harrass and deny with your Heroic passive, and learn to manage your charges to avoid mistakenly using a double wall and trapping your teammates to their doom. Talents depend on the role you intend to fill.