Crates and crystals provide Summoners with the chance to gain Units, Gold, and gear.
In order to view which crates and crystals are available to you, tap the icon on the home screen to access the STORE menu.
Crates are specific to Champion houses and grant gear when opened in exchange for Units. Higher tiers of crates are available the higher your battle rating tier is.
The VIEW BOX INFO button will detail the drop percentage of what you may receive when opening the crate. Some crates may have guaranteed drops, while others may have a slim percentage of granting powerful gear. Tap the icon in the CRATE menu to view this information.
Crystals can grant anything from resources to gear and can be found throughout Battleworld. Daily, weekly, and battle rating objective completion will grant crystals.
Be sure to check the claimable items in the OBJECTIVES menu for crystals.
Like crates, crystal rewards are varied. You may tap on the crystal in question to view what types of items are granted from opening it.