The purchase period ends on 14 March, after which you’ll have one month of Bonus XP to complete your War Chest and finish unlocking all rewards. Complete your War Chest by 11 April 2019 to earn all the goods.
Custom loading screen race banners, decals, console skins, and portraits are unlocked per race bundle you purchase. The War Chest Co-op XP Boost is unlocked upon purchase of any War Chest product, and is active until 11 April 2019.
Purchasing the War Chest Complete Bundle grants you a special random race loading screen banner in StarCraft II, as well as rewards in other Blizzard titles: a Tal’darim Probe Pet in Diablo III (unlocked on first War Chest purchase only), a Hearthstone Classic Card Pack, and a Heroes of the Storm Rare Loot Chest!