Favored Terrain. Cannot be surprised while in a swamp, forest or mountain terrain. 

Favored Enemies. Virion has honed his archery skills against his foes. Once per turn, Virion can add +5 to the attack roll or the damage roll of an attack you make against one of these enemies: 

Orcs, Goblins, Hobgoblins, Bugbears, Minotaurs, Giants

Beast Master. Virion has spent decades taming the wild. As long as he has his beast companions, he has access to the following traits: 

• On his turn, he can command the beast where to move (no action required by you) or take the Attack, Dash, Disengage, or Help action. If you don't issue a command, the beast takes the Dodge action.
• Beasts get at least two attacks and they count as magical. 
• When Virion casts a spell targeting himself, he can also affect his beast companions with the spell if the beast is within 30 ft. of him.

Feral Senses. When Virion attacks a creature he can’t see, he doesn't have disadvantage on his attack rolls against it. As long as he is conscious and can hear, he is also aware of the location of any invisible creature within 30 ft. that isn’t hidden.

Fey Ancestry. Virion has advantage on saves against being charmed, and magic can’t put him to sleep.

Spellcasting. Virion is a 20th-level spellcaster. His spellcasting ability is WIS. (spell save DC 19, +11 to hit with spell attacks). Virion has the following Ranger spells prepared:
1st level (4 slots): Absorb Elements, Ensnaring Strike, Fog Cloud

2nd level (3 slots): Cordon of Arrows, Healing Spirit, Misty Step, Spike Growth

3rd level (3 slots): Conjure Barrage, Lightning Arrow

4th level (3 slots): Conjure Woodland Beings

5th level (2 slots): Swift Quiver, Tree Stride

Multiattack. Virion can take two attacks on his turn with his longbow. 

Action Melee Attack. Melee Weapon Attack: +11 to hit, reach 5 ft., 1 target. Hit: 7 (1d4 + 5) Piercing damage. 

Heimdall. Ranged Weapon Attack: +15 to hit, range 150/600 ft., 1 target. Hit: 12 (1d8 + 7) Piercing damage. 

When he hits with this weapon, he deals an additional 1d6 of fire, ice, and lightning damage each.

Spells: The bow has 5 charges, and regains 1d4+1 expended charges every dawn. As an action, he may expend one charge to cast one of the following cantrips at full power as an arrow, using his longbow attack modifier (+15) for the spell:

Acid Splash, Eldritch Blast, Fire Bolt, Ray of Frost, Shocking Grasp

Bifrost Burst. As an action, he may expend all 5 charges to cast Prismatic Spray from the bow without any components.

Summon Dragon. Once per day, Virion calls forth his Adult Copper Dragon companion. 

Vanish. Virion can use the Hide action as a bonus action on his turn. Also, he can’t be tracked by nonmagical means, unless he chooses to leave a trail.

Legendary Resistance (3/Day). If Virion fails a saving throw, he can choose to succeed instead.

Virion 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 dragon regains spent legendary actions at the start of its turn.

Will of the People (Costs 1 Action). Virion can heal 40 hit points.

Will of the Crown (Costs 1 Action). Virion can make a single attack with Heimdall.

Will of the Woods (Costs 2 Actions). Virion calls forth another beast companion of CR 6 or less.

Will of the Dragon (Costs 3 Actions). If he has not used it yet, Virion can use Summon Dragon to call forth his Adult Copper Dragon companion.