Complex sentence: An alternate hero for Shaman, Morgle the Oracle, is available through the game's "Recruit A Friend" program after the recruited friend reaches a total of level 20 across all of the heroes.
Split into simpler sentences: An alternate hero for Shaman, named Morgle the Oracle, is available through the game's "Recruit A Friend" program. It is obtained when the recruited user reaches a total of level 20 across all of the heroes.