When Darth Vader killed all the Jedi at the Temple, it forged his connection to the Dark Side, but the massacre also gave him a Dark Side power-up.
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Star Wars Confirmed One Jedi Is More Powerful Than Darth Vader, jedi mais poderoso
Star Wars Revealed Why Darth Vader Is So Strong - He Absorbed Dead Jedi - Volume 1: 1995/2021
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Star Wars Confirmed One Jedi Is More Powerful Than Darth Vader, jedi mais poderoso
Darth Vader Is So Powerful, It Literally Hurts Jedi to Be Near Him