Fire Emblem Heroes: How to Use Dietrich in Summoner Duels

To run Dietrich successfully in Fire Emblem Heroes Summoner Duels, build him as an offensive glass cannon designed strictly for player-phase engagements. Because his defensive stats leave him vulnerable to immediate defeat on counterattacks or enemy initiations, your core strategy requires initiating against high-priority targets, securing single-round knockouts, and using movement support to keep him out of enemy threat zones.

Recommended Skill Priorities for Dietrich

Dietrich requires high skill investment to outperform modern defensive units and damage-reduction effects in Summoner Duels. Focus inheritance on maximizing his offensive stat scaling, ignoring enemy defenses, and enabling hit-and-run repositioning.

Skill Slot / Category	Focus Area	Functional Goal
A-Slot	Attack & Speed Scaling	Maximizes damage output and outpaces opponent Speed checks for follow-up attacks.
B-Slot & C-Slot	Defense Neutralization	Ignores enemy damage reduction and neutralizes defensive stat buffs.
Passives & Seals	Mobility & Retreat	Adds movement range or grants Canto-like movement to escape after combat.

If Dietrich fails to eliminate his target in a single round, he leaves your team exposed to a counterattack. Prioritize damage-scaling options over any defensive hybrid skills.

Building Team Support Around Defenses

Because Dietrich lacks natural durability and defensive damage reduction, he cannot safely end his turn inside an enemy threat zone. To maintain his survival across multiple turns, structure your Summoner Duels squad with defensive layers and utility allies:

Save Tanks: Pair Dietrich with armored units running Save skills. Save allies protect him from enemy attacks during the enemy phase if he cannot fully retreat to safety.
Dancers: Use dancing allies to grant Dietrich additional actions. This allows him to strike an opponent and immediately retreat behind your front line.
Stat Buffers & Debuffers: Apply Attack and Speed buffs to Dietrich while softening targets with stat debuffs prior to his initiation.

Positioning and Engagement Tactics

Fielding Dietrich effectively requires careful map management and turn timing. Avoid aggressive initiations early in the match if enemy high-mobility or long-range units overlap near your path.

Count Threat Squares: Before moving Dietrich into attack range, verify the movement boundaries of all active enemy units. Only engage if the target tile lets him retreat outside enemy reach or places him inside a allied Save range.
Wait for Overextension: Force the opponent to make the first move. Initiate combat only after the enemy team creates an opening or separates their high-threat attackers.
Hold as a Reserve: In matches against high-mobility teams, keep Dietrich in a reserve position behind sturdy front-line allies during early turns. Deploy him in the late game to clean up damaged targets when enemy positioning breaks down.