Strategy: Healing is a stat that needs time to pay off, and that's the core tension in Hilde's design. Rejuvenating Plea restoring 280% Attack as Health to every friendly hero is a huge number, but in a short, high-burst PvP trade that ends in a few seconds, she might only get one cast off — not enough time for the sustain to matter. In a long garrison siege or an extended Bear Hunt push, that same heal repeated over many turns adds up to a genuinely enormous amount of effective Health, which is exactly why she shines on defense and fades in quick exchanges.
Holy Invocation, her exclusive skill, amplifies all her healing effects by 70% — pushing Rejuvenating Plea to roughly 476% effective output and Redeemer to roughly 238%. That's significant enough that it's worth prioritizing gear that unlocks it before almost anything else in her kit. It's also worth knowing, if you're building against her, that this is precisely the kind of healing output Rosa's Swoon Chakra (-60% enemy healing) is designed to cripple.
Trial by Fire adds a separate mitigation layer — a 40% chance of -50% damage taken for all squads — which works alongside the healing rather than depending on it.
Skill priority: Rejuvenating Plea first as her core sustain tool, Holy Invocation as soon as it's available, Redeemer third for the single-target emergency heal.
She's not really competing with Thrud or Sophia for the Cavalry rally lead slot in the first place — she's a dedicated support hero. Once your account has the march capacity for it, run her on her own healing-focused march rather than benching her the moment a stronger Cavalry damage lead arrives.