Arachnid Presence. Any creature in a 15 feet cone of the creature must make a wisdom save DC 12 or be frightened. If frightened the creature can make the save again next turn.

Spellcasting. Yugraa is a 3th-level spellcaster. Its spellcasting ability is Wisdom DC 12 + 4. Yugraa has following warlock spells prepared:

Ray of Frost (cantrip). A frigid beam of blue-white light streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 4d8 cold damage, and its speed is reduced by 10 feet until the start of your next turn.

Ice Storm. A hail of rock-hard ice pounds to the ground in a 20-foot-radius, 40-foot-high cylinder centered on a point within range. Each creature in the cylinder must make a Dexterity saving throw. A creature takes 2d8 bludgeoning damage and 4d6 cold damage on a failed save, or half as much damage on a successful one.

Hailstones turn the storm's area of effect into difficult terrain until the end of your next turn.

Multiattack. Yugraa does 2 Arachnid Sword attacks 

Arachnid Sword . Yugraa stabbs you with one of her spiddery leggs. +5 to hit, 1d10+2 piercing damage.

Hellish Claws. Yugraa grabs and crushes you with her claws. +5 to hit, 1d8+2 bludgening damage. 

Yugaa has 1 attack and 1 bonus action in wich she can only do melee attacks.