Everyone who has a valid copy of Overwatch, an account in good standing, and signs up for the Overwatch League email list by April 29 will earn 100 Tokens, which would normally cost $5. If you play on PlayStation 4 or Xbox One, you must first link your PlayStation Network or Xbox Live account to your Battle.net account. Then, when you fill out your form, you must use the same email address associated with your Battle.net account. Even if you already are signed up for the Overwatch League email list, confirming your information will still earn you the 100 tokens.
With 100 Overwatch League Tokens, you can purchase one team-specific skin for a hero of your choosing, or get halfway to affording one of the premium, exclusive items, like the new Thunder Doomfist skin or the legendary turntable Lucio emote, each of which cost 200 Overwatch League Tokens.
The promotion ends on April 29, but tokens may take until May 6 to appear in your account. To sign up for the mailing list, head here.
[Source: Overwatch League]