Yi Sun-sin + Rex

Why Yi Sun-sin and Rex work together

Yi Sun-sin's Defiance Incarnate (factor 13,500) strips the target's shields and buffs. Unbreakable Fortress gives up to an 80% chance per hit to stack 1% damage reduction, up to 20 stacks. Defying the Odds adds damage against bigger troops, and Support Pillar adds garrison rage and ATK below half HP.

Rex's Divine Guardian shields his troop for 3 rounds and gains rage from attackers. Defensive Counterattack cuts damage taken by 7%, raises counterattack damage by 13% and lowers attackers' ATK by 20%. Support Pillar gives Berserkers +9% ATK and DEF, and Easy Reaping adds Berserker HP in garrisons.

Key skills at max level

Yi Sun-sin

• Defiance Incarnate (Burst): A warship rams the target, dealing damage and removing its shields and beneficial buffs.
• Unbreakable Fortress (Passive): When his troop takes damage, chance to gain a Fortify stack (1% less damage taken, 7 seconds, up to 20 stacks).
• Defying the Odds (Passive): Extra damage to enemy troops larger than his.

Rex

• Divine Guardian (Burst): Shields his troop for 3 rounds; each enemy attacking Rex gives 12 rage (max 36 per round).
• Defensive Counterattack (Passive): Raises counterattack damage; when attacked, lowers the attacker's ATK for 5 seconds (once every 10 seconds). Awakened version also cuts damage taken by 7%.
• Support Pillar (Passive): Raises ATK and DEF of Berserker soldiers.

Skill upgrade order

Yi Sun-sin

1. Unbreakable Fortress
2. Support Pillar
3. Defiance Incarnate
4. Defying the Odds

Rex

1. Defensive Counterattack
2. Easy Reaping
3. Support Pillar
4. Divine Guardian

Talent build

Yi Sun-sin's talent trees: Balanced, Garrison, Defense. For Free-to-play:

1. Max the Balanced tree (not yet read in game) first.
2. Then the Defense tree: Superior Defense (+1.6% DEF per star), Prevention Priorities (−10% skill damage taken) and Stockpiled Medicine.

See the open-field damage build and every talent node.

Troop mix

Mixed.

Swaps if you don't have Rex

• Iris F2P: Situational
• Reid F2P: Situational

Questions players ask

Is Yi Sun-sin + Rex a good pairing?

Yes for free-to-play. Rex (A rank) cuts attacker ATK by up to 20% for a cheap wall.

Who should be commander, Yi Sun-sin or Rex?

Yi Sun-sin commands and Rex is lieutenant. Both heroes' skills apply, but some skills only work in one role; see the skills section on this page.

What troops should Yi Sun-sin and Rex lead?

Mixed.