When my players fell through the portal into the new setting, they fell right into a nest of these terrifying giant 10-legged spiders.

Dekanid Adult

Tier 2 Standard
A 10-legged spider with a body about the size of a medium dog and fangs dripping with venom.
Motives & Tactics: Ambush, consume, hunt.
Difficulty: 13 | Thresholds: 10/16 | HP: 5 | Stress: 1
ATK: +2 | Bite: Melee | 2d4+4 physical
Experience: Stealth +3
FEATURES
Enweb – Action: If a target is incapacitated in some way, the Dekanid can wrap them in its web and drag them off to its lair.
Paralyzing Venom – Reaction: When the Dekanid makes a successful attack against a target, spend a Fear to Paralyze the target for the remainer of the scene or until it is somehow reversed. While Paralyzed in this way, the target is conscious but cannot move and their speech is unintelligible.

Dekanid Brood

Tier 2 Horde (3/HP)
Recently-hatched dekanid offspring with softball-sized bodies, fiercely aggressive and ravenous for fresh meat.
Motives & Tactics: Consume, overwhelm, protect mother.
Difficulty: 12 | Thresholds: 12/18 | HP: 5-2(3) | Stress: 2
ATK: +0 | Bite: Melee | 2d8+6 phy
FEATURES
Horde (1d8+3) – Passive: When the Broodlings have marked half or more of their HP, their standard attack deals 1d8+3 physical damage instead.

Dekanid Broodmother

Tier 2 Leader
A car-sized, 10-legged spider that defends its lair and its brood to the death.
Motives & Tactics: Consume, poison, protect brood, trap in web.
Difficulty: 14 | Thresholds: 13/24 | HP: 6 | Stress: 4
ATK: +5 | Bite: Melee | 2d8+6 phy
Experience: Stealth +3
FEATURES
Terrifying – Passive: Once per encounter, when the Broodmother makes a successful attack, all PCs within Far range lose a Hope and you gain a Fear.
Summon Brood – Action: Once per scene, mark a Stress to summon a Dekanid Brood, which appear at Far range.
Venomous Fangs – Reaction: When the Broodmother makes a successful attack against a target, spend a Fear to deal an additional 2d4+4 physical damage and Poison them until their next rest or they succeed on a Knowledge Roll (16). While Poisoned, the target must roll a d6 before they make an action roll. On a result of 4 or lower, they must mark a Stress.