Xerneas (5e Creature)
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Large fey, chaotic neutral
Saving Throws Wis +12
Legendary Resistance (3/day). If Xerneas fails a saving throw, it can choose to succeed instead.
Magic Resistance. The Xerneas has advantage on saving throws against spells and other magical effects.
Speak with Beasts and Plants. Xerneas can communicate with beasts and plants as if they shared a language.
Tree Stride. Once on its turn, Xerneas can use 10 feet of its movement to step magically into one living tree within its reach and emerge from a second living tree within 60 feet of the first tree, appearing in an unoccupied space within 5 feet of the second tree. Both trees must be Large or bigger.
Fairy Aura. All creatures of Xerneas's choice within 60 feet of it have disadvantage on saving throws against effects that deal radiant damage, and they take an additional 21 (6d6) damage from such effects (included in the effect).
Geomancy (1/day). Xerneas regains 100 hit points, and has advantage on all attack rolls, ability checks, and saving throws until the end of its next turn.
Moonblast. One target within 120 feet of Xerneas must make a DC 20 Dexterity saving throw. A target takes 76 (10d10 + 6d6) radiant damage on a failed saving throw, or half as much on a success.
Dazzling Gleam (Recharge 5-6). Xerneas shoots a blast of light in a 60-foot cone. Each creature of Xerneas's choice in that area must make a DC 20 Constitution saving throw, taking 93 (16d8 + 6d6) radiant damage on a failed save, or half as much damage on a successful one.
Horn Leech. Melee Weapon Attack: +12 to hit, reach 5 ft., one creature. Hit: 16 (2d10 + 5) piercing damage plus 35 (10d6) radiant damage, and Xerneas regains hit points equal to the radiant damage dealt.
The can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The regains spent legendary actions at the start of its turn.
Detect. Xerneas makes a Wisdom (Perception) check
Heal Pulse. Xerneas bestows 20 temporary hit points on another creature it can see within 120 feet of it.
Outrage (Costs 3 Actions). Xerneas makes one Horn Leech attack or uses Moonblast once.