Final answer:
Omen's From the Shadows ultimate ability requires 7 ultimate points to activate, which can be earned by gameplay actions such as kills and objective completions.
Step-by-step explanation:
The ultimate ability of the character Omen in the game is called From the Shadows. To activate Omen's From the Shadows ability, a player needs to accumulate 7 ultimate points. Players can earn these points by killing enemies, completing objectives, or picking up ultimate orbs found throughout the game maps.