Undead Fortitude. If damage reduces Cain to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, Cain drops to 1 hit point instead.
Perfect Reaction. Cain can make two reactions per round, but not on the same turn.
Undying Might. If Cain has not taken damage from radiant, force or psychic since his last turn, he regains 15 hit points.
Spellcasting. Cain is a 11th-level spellcaster. Its spellcasting ability is Constitution (spell save DC 18, +10 to hit with spell attacks). Cain has following spells prepared:
At will: absorb elements, silvery barbs, shield
3/Day: counterspell, hellish rebuke(3rd level)
1/Day: soul cage
Multiattack. Cain can make three attacks with either his Bloody Sickles or Corruption Chain. Cain can also substitute one of his attacks with his Call of Hunger ability.
Bloody Sickles. Melee Weapon Attack: +15 to hit, reach 5 ft., one target. Hit: 15 (2d4 + 10) [damage type] damage.
Corruption Chain. Cain throws out a rusted and runed chain. Every creature within a 30 foot line must make a DC 18 Dexterity saving throw or take 2d6 necrotic damage, becoming restrained by the chains, only take half on a success. Any creature restrained by Cain must make a DC 18 Wisdom saving throw at the start of their next turn or be under Cain's control and loses the restrained condition. A controlled creature can repeat the save at the end of their turn. Once a creature saves against the ability, they cant be affected by it for the next 24 hours.
Call of Hunger. Choosing a point within 30 feet, Cain can summon one of the following creatures to his aid (by roll of a d6) and it acts at the end of its turn, on his command, defending itself if an order is not given. Only one creature can be summoned at a time.
1. Allosaurus
2. Adult Kruthik
3. Hook Horror
4. Bulette
5. Elemental (1d4 to decide)
Parry. Once per turn when hit with a melee attack, Cain can roll to reduce incoming damage by 2d8+5. If all damage is reduced, he can make one melee attack as part of the reaction.
Cain can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. Abel regains spent legendary actions at the start of his turn.
Attack. Cain makes one weapon attack.
End Magic (Costs 2 Actions). Cain casts dispel magic.
Provoke Rage (Costs 3 Actions). Each creature within 30 feet of Cain must succeed on a DC 20 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If no creatures are within reach, it makes a ranged weapon attack against a random creature within range, throwing its weapon if necessary. This attack is made with advantage and gains a +4 bonus to the damage roll.
Generals Rage. When reduced to 0 hit points and succeeding on his Undead Fortitude save, Cain begins to grow in size to Large and gains the following abilities:
- Immunity to all non-magical damage
- Multiattack increases from three to four attacks per turn.
- AC increases to 25
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