With all the Orbs we’ve been getting in Fire Emblem Heroes, you likely have a lot of Heroes that need leveling and the new “Helping Hand” Special Quests will help out with a bunch of Shards and Crystals.
There are eight sets of quests with various conditions such as use red-type allies to defeat enemies, use infantry allies to defeat enemies, and so on.
Fire Emblem Heroes is available for iPhone and Android.