What the shop costs in Guildrun
The shop is where a Guildrun run is won or lost. It offers heroes, items and relics for Shards, and the prices are fixed: heroes run from 15 Shards at rank C to 45 at rank S, items from 5 to 25, and relics from 10 up to 40.
Saving matters as much as spending. Shards earn interest, one per five held up to a cap of twenty, so a run that banks early often buys more in total than one that spends every Shard it earns.
The shop between fights in Guildrun
Rerolls and team size in Guildrun
A reroll starts at one Shard and climbs by one each time, and the first extra hero slot costs 25 Shards with each one after that costing 50 more.