Emblem Based TeamsEdit
As players reach League Level 70, they start to focus on building their teams around which Emblems they want to build up. See the Emblem Based Teams page for a rundown of what Heroes and Angels are involved in each of these sorts of team building.
The Heroes/Angels, listed beside each Emblem, are what that Emblem's strength is based on. Improve those Heroes/Angels to strengthen that Emblem.
Emblem Crystals Edit
Each Emblem also has a crystal that provides an additional buff for affected Heroes. Touch the crystal on the Emblem detail screen to upgrade it. The materials for upgrading the crystals can be found in Emblem Chests or bought from the Guild Treasure Shop.