This is a guide on Ally Support in Fire Emblem Heroes. Learn what Ally Support does for units with a support, and how to increase support quickly!

What is Ally Support?

A Good Way to Buff Your Units

Ally Support is a way for two units to improve their relationship and give each other beneficial effects.

You can access Ally Support through the Interact With Allies tab in the Allies menu.

Only one unit can receive one Ally's support at any given time.

How the System Works

Here is how the Summoner Support system works:

• You can change Ally Support from any two units to another set as many times as you like.
• If you swap Ally Supports from one unit to another unit, they will start at bond level C.
• If you Ally Support one unit and then swap to another and then swap back to the first unit, they will start again at bond level C.
• Ally and Summoner Supports overlap their effects
• Ally Support effects are not active in Arena defense or Aether Raids defense.

Support Level and Effects

Bond Level	Effects (Adjacent)	Effects (1 Space Away)
S	Atk/Spd/Def/Res+2	Atk/Spd/Def/Res+1
A	Spd/Def/Res+2	Spd/Def/Res+1
B	Def/Res+2	Def/Res+1
C	Res+2	Res+1

These effects kick in when one unit is either adjacent or 1 space away from their support partner.

Ally Support Weapon Effects or Skills Overlap With Duplicates

If you have a unit that has a weapon or skill that involves a Support Partner such as Corrin (M), those effects will overlap or stack if you have duplicates of that unit.

Since the same Ally Support is reflected across all copies of one unit, all duplicates will be able to buff their one Support partner.

For instance, Corrin (M)'s Yato grants buffs if he is within 2 spaces of his Support partner.

If you have 3 copies of Corrin (M) and one of their support partner on one team, their Yato effects will collectively overlap on that unit.

Note that the Ally Support buff will not stack, only the effects of the weapon and skills. You can pair this with other skills like Drive Atk 2 or Spur Spd 3 for even stronger effects.

How to Increase Summoner Support

Chain Challenges is Recommended

Doing Chain Challenges on Normal are not just a great way to grind for Ally Support, you can also use them for SP Grinding as well!

Estimated Bond Leveling Battles

Defeating Enemies With Only One Unit

Bond Level	Estimated Enemy Units Defeated	Cummulative Enemy Units Defeated
C to B	10 foes	10 foes
B to A	47 foes	54 foes
A to S	114 foes	171 foes

Bond Levels are shown when a unit is Lvl 40 and a 5★.

This is the estimated number of enemy units that need to be defeated by only one unit of the Support pair.

After defeating about 171 foes, the unit and their Support Partner reached S Support.

Defeating Enemies Using Both Units

Bond Level	Estimated Enemy Units Defeated	Cummulative Enemy Units Defeated
C to B	16 foes	16 foes
B to A	38 foes	54 foes
A to S	74 foes	128 foes

Bond Levels are shown when a unit is Lvl 40 and a 5★.

This is the estimated number of enemy units that need to be defeated by both units of the Support pair.

After defeating about 128 foes, both units reached S Support.

Stamina Calculation

If you defeat about 40 enemy units in Chain Challenges Normal, you'll need to go for about 4-5 rounds, which is about 126 Stamina.

If you spam another map such as the 8th Stratum of the Training Tower, you'll need about 42 rounds, which is about 378 Stamina.

Recommended Units for Ally Support

Unit 1	Unit 2	Overview
Reinhardt	Masquerade Sigurd	One high power magic user and a dancer. Both are cavalry units that can cover large areas of the map.
Legendary Roy	Brave Lyn	Two cavalry units with high firepower that can cover large areas of the map.
Brave Hector	Corrin (M)	Brave Hector has a lot of buffs on his weapon's refine, paired with Corrin's Yato refine will make him hit harder and be able to tank more.
Ninja Lyn	Plumeria	Two flier units, one being a dancer. Plumeria can buff Lyn and debuff enemy units within 4 spaces of her.
Navarre	Velouria	Navarre's weapon refine gives him Special cooldown -2 on turn 1, in addition to accelerating his Special trigger. Velouria's weapon gives her Support Partner Special cooldown -2. This means Navarre can have Galeforce trigger the moment he attacks.
Brave Ike	Brave Lucina	Brave Lucina's weapon refine will allow her to buff an already tanky Brave Ike.

We'll update this table if more viable Ally Supports are made apparent.

In the meantime, share us your own Ally Supports in the comments section!

Ally Support Summary

Ally Supports are a good way to mutually buff two units at the same time when they're both in battle.

Pair units up and see which combinations will make for a powerful team!

Fire Emblem Heroes Related Guides

Useful Links

Useful Information and Guides

Building Units

Building Your Heroes
Level Grinding | How to Level Up Fast	How to Gain SP Quickly
How to Use Inherit Skill	Merge Allies Guide
Heroes You Should Unlock Potential For	Which Heroes Should You Send Home?
When Should You Unlock Potential?	How to Use the Training Tower
Trait Fruits: How to Change IVs	How to use Dragonflowers
How to Get Divine Codes	How to Grind Summoner Support
How to Increase Ally Support	General Tips for Building Units

Building Specific Roles

Hero Roles
Heroes with Refresher Skills	List of Staff Users
Physical Wall Heroes (Tanks)	Magic Wall Heroes (Res Tanks)

Beginner Guides

Beginner Guides
Five Things to Know Before Starting	Reroll Tier List
Hero Building	Beginner's Guide
List of All Skills	How to Get Free Orbs
My Summoner Guide	Should I Merge or Fodder Off Units?

Arena

Arena Guides
Arena Guide	Best Arena Teams
Win 5 Battles in Arena With No Deaths	Arena and Aether Raids Seasons

Aether Raids

Aether Raids Articles
Aether Guides	List of Aether Raids Structures
Aether Raids Offense Guide	Best Aether Raid Defense Units

Summoner Duels

Summoner Duels Articles
Summoner Duels Guide