Summer Seth Builds and Best IVs

This is a ranking page for the hero Seth - Silver-Sea Knight 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 Summer Seth.

Heroes With the Same Name
Seth	Summer Seth

Summer Seth Rating and Basic Information

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

Seth - Silver-Sea Knight: Basic Information

Color / Weapon Type / Move Type	Green / Axe / Cavalry
Rarity	5 Star 4 Star
What Kind of Character Are They?	・ Weapon skill grants buffs and grants a guaranteed follow-up attack

Summer Seth Skills at 5★

Seahorse Axe+ Might: 14　 Range: 1 If unit initiates combat or is within 2 spaces of an ally, grants Atk/Def+5 to unit during combat and unit makes a guaranteed follow-up attack.

Rally Up Spd Range: 1 Grants Spd+4 to target ally and allies within 2 spaces of target (excluding unit) for 1 turn.

Spd/Def Catch 3 At start of combat, if foe’s HP = 100% or if 【Penalty】 is active on foe, grants Spd/Def+5 to unit during combat. 【Penalty】 All effects that last "on foe through its next action." Includes penalties inflicted by a skill like Panic or Threaten and negative status effects (preventing counterattacks, restricting movement, or the effects of a skill like Triangle Adept or Guard).

Def Tactic 3 At start of turn, grants Def +6 to allies within 2 spaces for 1 turn. Granted only if number of that ally’s movement type on current team ≤ 2.

Summer Seth Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (18)		★★★☆☆
Atk (10)		★★★★☆
Spd (8)		★★★★☆
Def (9)		★★★☆☆
Res (5)		★★☆☆☆

◯ = 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 Tempest Trials, Summer Seth will always have neutral IVs by default. The only way to access IVs for this unit is through using Trait Fruits.

+Atk / -Res

The best IVs for Summer Seth are +Atk and -Res. A high base Atk stat of 40 backed by a superboon and a guaranteed follow-up attack granted by his weapon is exactly the edge Summer Seth needs to knock out his enemies.

His Res is very low and decreasing it further should not change any of his matchups. Thus, it is a safe bane to take.

+Spd for a +10 merge

We recommend +Spd when merging Summer Seth to +10. Aided by a superboon, this high investment build allows him to make follow-up attacks and potentially negate enemy follow-up attacks by simply boosting his Spd.

Summer Seth Best Builds

General Use / Budget Summer Seth

： Seahorse Axe+ ： Rally Up Spd ： Moonbow ： -

： Spd/Def Catch 3 ： Spd/Def Ruse 3 ： Def Tactic 3 ： Atk Tactic 3 ： -

How to Use, Explanation

Using a Ruse skill allows Summer Seth's Rally Up Spd to also inflict penalties onto foes. A Feint skill also works if Ruse skills are unavailable.

Source Heroes for All Skills

Summer Seth Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
173
HP	40	Rank: 419/1088
Atk	40	Rank: 222/1088
Spd	38	Rank: 273/1088
Def	31	Rank: 361/1088
Res	24	Rank: 626/1088

Stat Values

Lv 40+10 Stats (5★)

	HP	Atk	Spd	Def	Res	Total
+10 Merges W/ Skill Bonuses	45	59	42	36	28	210
Lv.40 +10	45	45	42	36	28	196

Stats at Lv 40

	HP	Atk	Spd	Def	Res	Total
5★- Adjusted for Skills	40	54	38	31	24	187
5★ Lv.40	40	40	38	31	24	173
4★ Lv.40	37	38	35	29	22	161

Initial Stats (with Skills)

	HP	Atk	Spd	Def	Res	Total
5★ Lv.1	18	24	8	9	5	64
4★ Lv.1	17	20	7	9	4	57

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Young Frederick	41	46	28	47	23	185
Winter Dimitri	41	47	46	32	19	185
Rearmed Lucina	40	43	47	31	23	184
Sylvain	40	44	35	37	23	179
Summer Ephraim	41	47	16	44	31	179
Spring Karla	40	45	47	24	22	178
Legendary Xander	40	42	41	35	17	175
Groom Roy	39	38	42	30	25	174
Summer Dimitri	40	42	40	35	17	174
Fallen Gustav	40	41	25	38	30	174
Ótr	41	41	17	40	35	174
Summer Seth	40	40	38	31	24	173
Spring Saleh	41	37	36	26	28	168
Plegian Kris (M)	41	37	37	31	22	168
Summer Caeda	39	33	42	26	28	168
Lex	45	36	30	38	19	168
Groom Zelot	41	37	25	39	25	167
Pirate Veronica	38	39	19	36	29	161
Groom Marth	40	31	36	30	20	157
Spring Alfonse	41	35	33	30	18	157
Walhart	41	37	27	36	16	157
Titania	37	28	34	25	30	154
Frederick	43	35	25	36	14	153
Gunter	43	32	24	33	18	150

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

Summer Seth Roles, Strengths, and Weaknesses

Summer Seth Roles

Seth - Silver-Sea Knight 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

Summer Seth is a close physical attacker (range = 1). Therefore, when not accounting for the Weapon Triangle, the amount of damage he/she deals will be equivalent to his/her Atk minus the foe's Def stat.

Summer Seth Strengths

Seahorse Axe+

Similar to Summer Lyon's Coral Saber+, Summer Seth's Seahorse Axe+ grants Atk/Def+5 to its wielder during combat and allows him/her to make a guaranteed follow-up attack.

This inheritable axe is perfect for slow units that cannot make a follow-up attack on their own.

Summer Seth Weaknesses

Weak to Cavalry Effective Weapons

Summer Seth takes 1.5x damage from cavalry-effective weapons like Thani or Binding Reginleif, and one blow from this type of weapon is sure to take him/her down. Make sure you know what weapons you are up against before hopping too far into the line of battle!

Heroes with Effective Skills

Should you Unlock Potential?

Should You Unlock Potential for this Hero?

We Recommend You Unlock Potential for Seth - Silver-Sea Knight!

We recommend that you use Unlock Potential to bring Seth - Silver-Sea Knight from 4 Stars to 5 Stars. Seth - Silver-Sea Knight is a very useful bulky axe cavalry, so we recommend you Unlock Potential for Seth - Silver-Sea Knight if your team lacks a strong bulky axe cavalry.

Unlock Potential Tier List

Summer Seth - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Iron Axe	6	1	No Effect	3★
Steel Axe	8	1	No Effect	3★
Seahorse Axe	10	1	If unit initiates combat or is within 2 spaces of an ally, grants Atk/Def+5 to unit during combat and unit makes a guaranteed follow-up attack.	3★
Seahorse Axe+	14	1	If unit initiates combat or is within 2 spaces of an ally, grants Atk/Def+5 to unit during combat and unit makes a guaranteed follow-up attack.	5★

Assists

Skill Name	Range	Effect	Learned At
Rally Speed	1	Grants Spd +4 to an adjacent ally until the end of the turn.	3★
Rally Up Spd	1	Grants Spd+4 to target ally and allies within 2 spaces of target (excluding unit) for 1 turn.	4★

Specials

This Hero has no Special skills that can be learned.

Passives

Skill Name	Effect	Learned At
Spd/Def Catch 1	At start of combat, if foe’s HP = 100% or if 【Penalty】 is active on foe, grants Spd/Def+3 to unit during combat. 【Penalty】 All effects that last "on foe through its next action." Includes penalties inflicted by a skill like Panic or Threaten and negative status effects (preventing counterattacks, restricting movement, or the effects of a skill like Triangle Adept or Guard).	3★
Spd/Def Catch 2	At start of combat, if foe’s HP = 100% or if 【Penalty】 is active on foe, grants Spd/Def+4 to unit during combat. 【Penalty】 All effects that last "on foe through its next action." Includes penalties inflicted by a skill like Panic or Threaten and negative status effects (preventing counterattacks, restricting movement, or the effects of a skill like Triangle Adept or Guard).	4★
Spd/Def Catch 3	At start of combat, if foe’s HP = 100% or if 【Penalty】 is active on foe, grants Spd/Def+5 to unit during combat. 【Penalty】 All effects that last "on foe through its next action." Includes penalties inflicted by a skill like Panic or Threaten and negative status effects (preventing counterattacks, restricting movement, or the effects of a skill like Triangle Adept or Guard).	5★
Def Tactic 1	At start of turn, grants Def +2 to allies within 2 spaces for 1 turn. Granted only if number of that ally’s movement type on current team ≤ 2.	3★
Def Tactic 2	At start of turn, grants Def +4 to allies within 2 spaces for 1 turn. Granted only if number of that ally’s movement type on current team ≤ 2.	3★
Def Tactic 3	At start of turn, grants Def +6 to allies within 2 spaces for 1 turn. Granted only if number of that ally’s movement type on current team ≤ 2.	4★

Summer Seth as a Source Hero

Value of Skills	★★★★☆

Summer Seth has Rally Up Spd, Seahorse Axe+ and Spd/Def Catch 3 as viable inheritance options.

This is the first time a Rally Up skill is present on a hero without its upgraded version. This makes Summer Seth a good bridge unit for inheriting Rally Up Spd+ from another hero.

List of Source Heroes

The Best Fodder Units

Community Feedback

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How to Get Summer Seth / Illustrations / Voice Actor / Quotes

How to Get Summer Seth

Obtained as a Reward in Tempest Trials

Summer Seth is a limited time Hero who can be obtained as a reward for your score in the Tempest Trials. 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)	Chris Smith
Illustrator	kuronoyuu
Appears In	Fire Emblem: The Sacred Stones

Illustration

FEH: Related Guides

See All Green Heroes

▶︎Return to the Green Heroes Page

All Types of Green Weapons

Close-Range	Ranged
Axe	Green Tome
Green Breath	Green Dagger
Green Beast	Green Bow