https://www.gamespot.com/articles/next-amazon-twitch-freebies-are-still-available/1100-6457866/

Amazon and Twitch are on a role these days, giving away tons of digital goodies to Twitch users with Amazon Prime memberships. Not only do you get five free games this month and free Fortnite goodies, but you can also grab some free Heroes of the Storm loot as well.

Each month between now and July 2, Twitch Prime members will receive free in-game rewards. Starting today and ending May 1, Twitch Prime members can grab one Legendary Loot Chest that's guaranteed to contain at least one Legendary item. During the month of May, the giveaway is a new Glitch-steed mount and five Rare Loot Chests, which are guaranteed to contain at least one Rare item. And from May 31 to July 2, players will receive five Rare Loot Chests.