In AFK Arena, the Library is where you can use your own Heroes or your friends’ Heroes to get more buffs for those exact Heroes in your team!
You still can use the assigned Heroes for all of the other activities in the game!
The old Library is crammed with countless tales written by the travelling bards of Esperia. Within it are the stories of many great heroes, some touching, others heartbreaking. They tell the tales of how great friendships and alliances were forged, brought together to fight against a common enemy. They are forever unbreakable…
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Library/Unions Summary
- Choose a friend’s heroes or your own heroes to form a union.
- Different combinations of heroes can form different types of unions, increasing your formation’s total power.
- Higher tier Heroes are able to active stronger unions.
- You can select some of your heroes under “My Mercernaries” for your friends to borrow.
- If a player has not been online for over 7 days or a hero being used is lost, then that hero will no longer be available as a mercenary.
Library Unions Complete List
The Gallant Three Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | HP +1200 HP +1.00% |
| Elite+ | ATK +150 ATK +5.00% |
| Legendary+ | HP +2000 DEF +50 HP +10.00% DEF + 10.00% |
Defenders Of The Forest Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | HP +1200 HP +1.00% |
| Elite+ | ATK +150 ATK +5.00% |
| Legendary+ | ATK +250 DODGE +30 ATK +10.00% |
The Dusk Patrollers Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | ATK +120 ATK +1.00% |
| Elite+ | HP +1000 ACC +30 HP +5.00% |
| Legendary+ | ATK +250 CRIT +15 ATK +10.00% |
Master And Apprentice Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | HP +1200 HP +1.00% |
| Elite+ | ATK +150 ATK +5.00% |
| Legendary+ | ATK +250 LL +15 ATK +10.00% |
Arcanists Union Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | DEF +25 DEF +1.00% |
| Elite+ | HP +1600 HP +5.00% |
| Legendary+ | ATK +250 CRIT +15 ATK +10.00% |
The Dragon Slayers Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | DEF +25 HP +1.00% |
| Elite+ | CRIT +15 ATK +5.00% |
| Legendary+ | HP +2000 DODGE +30 HP +10.00% |
The Wrathful Two Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | HP +1,200 HP +1.00% |
| Elite+ | ACC +30 |
| Legendary+ | HP +2,000 DEF +50 HP +10.00% DEF +10.00% |
Wisdom & Hope Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | HP +1,200 HP +1.00% |
| Elite+ | ATTACK +150 ATTACK +5.00% |
| Legendary+ | DEF +100 CRIT +10 DEF +15.00% |
Castellans Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | ACC +15 |
| Elite+ | CRIT +10 |
| Legendary+ | HP +2,000 ACC +30 HP +10.00% |
The Lightbringers Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | HP +1,200HP +1.00% |
| Elite+ | DEF +50 DEF +5.00% |
| Legendary+ | HP +2,000 ATTACK +250 HP +10.00% Attack +10.00% |
The Bounty Hunters Union
| Heroes | |
   |
|
| Rarity | Bonus |
| Any | DEF +25DEF +1.00% |
| Elite+ | CRIT +15 ATK +5.00% |
| Legendary+ | HP +2,000 ACC +30 HP +10.00% |
The Sisterhood Union
| Heroes | |
  |
|
| Rarity | Bonus |
| Any | DEF +25DEF +1.00% |
| Elite+ | CRIT +15 ATK +5.00% |
| Legendary+ | HP +2,000 ACC +30 HP +10.00% |
