Riev Builds and Best IVs

This is a ranking page for the hero Riev - Blood Beryl from the game Fire Emblem Heroes (FEH). Read on to learn the best IVs (Individual Values), best builds (Inherit Skill), weapon refinement, stats at Lv 40, and more for Riev.

Riev Rating and Basic Information

Overall Rating	8.5/10
Reroll Ranking (excluding Inherit Skill)	Unranked (▶Reroll Ranking)
Ranking (including Inherit Skill)	A (▶FEH Tier List)

Riev - Blood Beryl: Basic Information

Color / Weapon Type / Move Type	Blue / Blue Tome / Infantry
Rarity	4 Star 3 Star
What Kind of Character Are They?	・Weapon skill accelerates Special trigger, inflicts debuffs on enemy units, restricts units with extra movement skills to 1 space, and grants buffs to himself.

Riev Skills at 5★

Argent Aura Might: 14　 Range: 2 Accelerates Special trigger (cooldown count-1). At start of turn, inflicts Atk/Spd/Def/Res-5 and 【Stall】on foes on the enemy team with the lowest Spd and any foes within 2 spaces of those foes. At start of combat, if foe's HP ≥ 75%, grants Atk/Res+6 to unit during combat. 【Stall】If unit has "unit can move 1 extra space," converts that effect into "restricts movement to 1 space" through its next action.

Glacies Cooldown Count = 4 Boosts damage dealt by 80% of unit’s Res.

Atk/Res Ideal 3 At start of combat, if unit's HP = 100% or if 【Bonus】 is active on unit, grants Atk/Res+5 to unit during combat.

Savage Blow 3 If unit initiates attack, foes within 2 spaces of target take 7 damage after combat.

Riev Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (19)		★★★☆☆
Atk (25)		★★★★★
Spd (6)		★★☆☆☆
Def (4)		★★☆☆☆
Res (10)		★★★★☆

◯ = Stat gains +4 with a superboon, ✕= Stat goes down by -4 with a superbane, - = No assets or flaws

See the IV Checker for All Units

Trait Fruits—How to Change IVs

When using an Ascendant Floret, we recommend getting the next superboon if it fits the hero. If not, consider what stat your hero needs most.

Neutral IVs by default!

As a hero obtainable only through Grand Hero Battle, Riev will always have neutral IVs by default. The only way to access IVs for this unit is through using Trait Fruits.

+Atk/-Def

The best IVs for Riev are +Atk and -Def. A +Atk IV is best for him as he wants to deal as much damage as possible. With this IV, the range of units he can take out with one hit will increase. His Def is of less importance so it is safe to take it as his bane.

+Atk for a +10 Merge

We recommend a +Atk IV when merging Riev to 10. This is for the same reasons as stated above.

Riev Best Builds

General Use Riev

： Argent Aura ： Reposition ： Iceberg ： -

： Atk/Res Ideal 4 ： Lull Atk/Res 3 ： Savage Blow 3 ： Savage Blow 3 ： -

How to Use, Explanation

Riev's weapon is the star here, but we want to up his firepower with Atk/Res Ideal 4 and debuff enemies with Lull Atk/Res 3. Double Savage Blow will help tick down enemy units faster for the rest of his team to clean up.

Source Heroes for All Skills

Riev Stats

Stat Values

Lv 40+10 Stats (5★)

	HP	Atk	Spd	Def	Res	Total
+10 Merges W/ Skill Bonuses	48	58	29	27	45	207
Lv.40 +10	48	44	29	27	45	193

Stats at Lv 40

	HP	Atk	Spd	Def	Res	Total
5★- Adjusted for Skills	43	53	25	23	40	184
5★ Lv.40	43	39	25	23	40	170
4★ Lv.40	40	37	23	21	38	159
3★ Lv.40	39	35	22	20	36	152

Initial Stats (with Skills)

	HP	Atk	Spd	Def	Res	Total
5★ Lv.1	19	25	6	4	10	64
4★ Lv.1	18	20	5	3	10	56
3★ Lv.1	18	16	5	3	9	51

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Hestia	40	45	31	23	43	182
Veyle	39	46	30	21	46	182
Young Mark	40	44	27	20	46	177
Legendary Deirdre	40	43	32	19	43	177
Riev	43	39	25	23	40	170
Sonia	40	35	24	32	35	166
Marianne	36	41	32	17	39	165
Legendary Julia	40	39	28	19	36	162
Brunnya	42	35	31	21	33	162
New Year Alfonse	41	38	17	35	30	161
Ophelia	38	37	33	20	23	151
Micaiah	35	35	28	18	35	151

Note: Stats bonuses from skills are not taken into account.

Riev Roles, Strengths, and Weaknesses

Riev Roles

Riev - Blood Beryl Roles
Close-Physical	Ranged-Physical	Close-Magic	Ranged-Magic
Physical Wall	Magic Wall	Effective Weapon	Movement Assist
Exclusive Skill	All-Range Counter	Recovery	Refresher
Legendary	Mythic	Duo / Harmonized	Resplendent

Riev is a ranged magic attacker (range = 2). Therefore, when not accounting for the Weapon Triangle, the amount of damage he deals will be equivalent to his Atk minus the foe's Res stat.

Riev Strengths

Argent Aura Puts a Stop to Extra Movement Skills!

Riev's weapon has the following effects:

1	Accelerates his Special trigger.
2	Inflicts Atk/Spd/Def/Res-5 and【Stall】on enemy units with the lowest Spd and any allies they have within 2 spaces.
3	Grants Riev Atk/Res+6 during combat when his HP ≥ 75%

While the buffs and Special acceleration are great effects, what makes this tome truly powerful is the fact that any unit with an extra movement skill will be restricted to only 1 space.

Since Fallen Edelgard met the conditions for Armored Stride, she triggers Argent Aura's movement restriction effects. Because she is in proximity of her allies, her allies get their movement restricted too.

This hits skills such as Odd Tempest 3, Yuri's Honorable Blade, Legendary Sigurd's Holy-Knight Aura, and Fallen Edelgard's Armored Stride 3 which she heavily relies upon.

Riev Weaknesses

Low Defense

Riev suffers the same weakness as several other mages - his Def isn't very high so he has no way to retaliate if a physical damage melee unit decides to get up close and personal.

Should you Unlock Potential?

Should You Unlock Potential for this Hero?

We Recommend You Unlock Potential for Riev - Blood Beryl!

We can say with confidence that you should use Unlock Potential to bring Riev - Blood Beryl from 4 Stars to 5 Stars. Riev - Blood Beryl is a very useful debuff attacker, so we recommend you Unlock Potential for Riev - Blood Beryl if your team lacks a strong debuff attacker.

Unlock Potential Tier List

Riev - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Light	4	2	No Effect	4★
Ellight	6	2	No Effect	4★
Shine	9	2	No Effect	4★
Argent Aura	14	2	Accelerates Special trigger (cooldown count-1). At start of turn, inflicts Atk/Spd/Def/Res-5 and 【Stall】on foes on the enemy team with the lowest Spd and any foes within 2 spaces of those foes. At start of combat, if foe's HP ≥ 75%, grants Atk/Res+6 to unit during combat. 【Stall】If unit has "unit can move 1 extra space," converts that effect into "restricts movement to 1 space" through its next action.	5★

Assists

This Hero has no Assist skills that can be learned.

Specials

Skill Name	Effect	Learned At
Chilling Wind	(Cooldown Count = 4) Boosts damage dealt by 50% of unit’s Res.	4★
Glacies	(Cooldown Count = 4) Boosts damage dealt by 80% of unit’s Res.	5★

Passives

Skill Name	Effect	Learned At
Atk/Res Ideal 1	At start of combat, if unit's HP = 100% or if 【Bonus】 is active on unit, grants Atk/Res+3 to unit during combat.	5★
Atk/Res Ideal 2	At start of combat, if unit's HP = 100% or if 【Bonus】 is active on unit, grants Atk/Res+4 to unit during combat.	5★
Atk/Res Ideal 3	At start of combat, if unit's HP = 100% or if 【Bonus】 is active on unit, grants Atk/Res+5 to unit during combat.	5★
Savage Blow 1	If unit initiates attack, foes within 2 spaces of target take 3 damage after combat.	5★
Savage Blow 2	If unit initiates attack, foes within 2 spaces of target take 5 damage after combat.	5★
Savage Blow 3	If unit initiates attack, foes within 2 spaces of target take 7 damage after combat.	5★

Riev as a Source Hero

Value of Skills	★★★☆☆

Riev most notably can be used to inherit Atk/Res Ideal 3, though being a free unit, he is also a good, reliable source for Glacies and Savage Blow 3.

As he can be obtained via Grails, he's a very useful fodder unit in a pinch.

• List of Source Heroes
• The Best Fodder Units

How to Get Riev / Illustrations / Voice Actor / Quotes

How to Get Riev

Obtain through a Grand Hero Battle

Riev is a Hero who, for a limited time, can be obtained through completing a Grand Hero Battle for the first time. They do not appear in regular summons. After the event has ended, they can be obtained by using Heroic Grails.

Voice Actor and Illustrator Information

Voice Actor (English)	Bill Butts
Illustrator	Daisuke Izuka
Appears In	Fire Emblem: The Sacred Stones

Illustration

FEH: Related Guides

See All Blue Heroes

▶︎Return to the Blue Heroes Page

All Types of Blue Weapons

Close-Range	Ranged
Lance	Blue Tome
Blue Breath	Blue Dagger
Blue Beast	Blue Bow