Spellcasting. The seeker is a 15th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 15). It knows the following ranger spells.

1st level (4 slots): ensnaring strike, hail of thorns, speak with animals
2nd level (3 slots): pass without trace, silence
3nd level (3 slots): conjure barrage, lightning arrow
4th level (2 slots): freedom of movement, locate creature

Multiattack. The seeker makes two weapon attacks against the same target or three weapon attacks against different targets.

Scimitar. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 8 (1d6 + 5) slashing damage, and the target must make a DC 15 Constitution saving throw, taking 14 (4d6) poison damage on a failed save, or half as much damage on a successful one.

Longbow. Ranged Weapon Attack: +9 to hit, range 150/ 600 ft., one target. Hit: 9 (1d8 + 5) piercing damage, and the target must make a DC 15 Constitution saving throw, taking 14 (4d6) poison damage on a failed save, or half as much damage on a successful one.

Hunter's Quarry. The seeker designates one creature that it can see within 90 feet of it as its quarry. Until it uses this bonus action again or loses consciousness, the seeker has advantage on ability checks made to perceive or track the target, and it deals an extra 7 (2d6) damage whenever it hits the target with a weapon attack.