Ice Walk. The brood spawn can move across and climb icy surfaces without needing to make an ability check. Additionally, difficult terrain composed of ice or snow doesn't cost it extra moment.
Magic Resistance. The brood spawn has advantage on saving throws against spells and other magical effects.
Sunlight Sensitivity. While in sunlight, the brood spawn has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Unyielding Essence. The brood spawn is immune to any spell or effect that would alter its form, as well as those that would read its thoughts, determine if it is lying, or magically influence its thoughts or behavior.
Multiattack. The brood spawn makes two attacks: one with its bite and one with its claw.
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage plus 3 (1d6) cold damage.
Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage plus 3 (1d6) cold damage.
Cold Breath (Recharge 6). The brood spawn exhales an icy blast in a 30–foot cone. Each creature in that area must make a DC 14 Constitution saving throw. On a failed save, a creature contracts Brood Fever and takes 14 (4d6) cold damage. On a successful save, a creature takes half as much damage and does not contract Brood Fever.
Description
Brood Fever. Although Father Llymic's touch can transform creatures into brood spawn, the far more common method of creating these horrors is through the contraction of Brood Fever. Most contract this ailment after being subjected to a brood spawn's Cold Breath, but any creature that takes a short or long rest within 1 mile of Father Llymic also risk contracting it.
Symptoms manifest one day after infection and include fever and disorientation. At the end of each long rest after the symptoms appear, the creature must make a DC 23 Constitution saving throw. On a failed save, the creature suffers one level of Soul Chill. This disease is automatically cured when Father Llymic dies, the infected creature successfully saves against this disease three times, or if the creature has a greater restoration or similar magic cast on them while the target is in natural or magical sunlight, which sets its Soul Chill level to 0.
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