Dynasty Scrolls has an option to redeem codes for in-game rewards.
How to Redeem
Gift codes can be redeemed in-game.
It’s very easy, just follow these steps:
1.) Tap on the “More” Icon in the top left corner of the main screen in-game. It’s below your player avatar.
2.) Tap on the “Settings” icon on the menu that drops down.
3.) Tap on the “Exchange” button next to Gift Code.
4.) Enter the code.
5.) Collect the rewards from the in-game mailbox.