SBH shard are points that can be used for GUM discounts when purchasing SBH. 1 GUM discount is available for every 100 shards.

They have rarity levels and can only be used for SBH of the corresponding rarity.

Referral rewards for Original Heroes are funded by 50% of the GUM paid, excluding the discount from SBH shards.

There is a limit on the number of shards that can be used per purchase based on the rarity of the SBH.

• Legendary , Epic , Rare : Up to 50%

• Uncommon , Common : Up to 80%

We are planning a future update that will allow higher-rarity SBH shards to be exchanged for lower-rarity SBH shards.