I Can Extract Abilities

As the world slowly became digitized, Overlord-leveled monsters began to emerge from another dimension and created dungeons in every corner of Earth.
All the surviving humans had become players who could choose their own attributes and Classes, ranging from Mages to Warriors, Assassins, Tanks, and other rare Classes.
By chance, Li Feng realized that he had the power to extract other people’s powers.
Ding!
You have extracted the skill Merciless Sword Draw (Fifth page of the Sword Scroll. Achieve divine sword drawing with a pure heart.)
You have extracted the skill Mecha Leader (Summons the leader of the Mechas from another dimension.)
As long as Li Feng spent all of his time grinding, he could have a lot of powers up his sleeves and become the strongest man to have ever lived.