What is a Warrior (Enhancer) dragon good for in Dragonfire?

The Warrior is the Enhancer: its key stat is Strength and it hits in physical damage. It's your front-line bruiser.

Its typical aura is Warrior's Zeal (+16% physical damage, +20 Initiative) and Battle Rush (+25% Initiative to allies, −Instinct to the enemy) — excellent for striking first.

Plenty of Warriors play tank: Vhagar and Vaeldra apply Taunt, forcing the enemy to attack them, which shields your fragile dragons. Others — Daemoros, Thunderstrike, Venator — are pure physical burst. Remember: physical damage is reduced by the defender's Instinct.