Lux’s Magic Jar — The Threat

Lux is using Magic Jar to control a Fire Giant’s body. He has an item (the jar) that his soul returns to if the body dies. He does not yet realise how much danger he is in.

Magic Jar Rules (Key Points)

Lux’s soul is in the Fire Giant body. His jar (an item) must stay within 100 feet.
If the body dies: Charisma save to return to jar. Only works if jar is within 100 feet.
If the jar is destroyed or the spell ends: soul returns to his real body. If his body is >100ft away or dead, he dies.
Planar boundaries: The spell doesn’t explicitly address this, but a portal to another plane would exceed the 100ft limit. Lux would be severed from his jar.

The Corrupted Slaad Tadpoles

The Fire Giants in the hall have been possessed by [[Corrupted Slaad Tadpoles]] — slaad tadpoles twisted by Allabar’s Far Realm influence. They enter through the eyes, attach to the brain, and establish a psychic tether to Allabar. Vecna can then puppet the host at will.

Standard slaad tadpoles are aberrations from Limbo — these have been corrupted by Far Realm energy
The eye entry is thematically tied to Vecna (the Eye of Vecna)
The tether allows Vecna to see through, speak through, and control the host
Hosts can be recalled through portals to Allabar at Vecna’s command
Nemesis has one in a jar — found at the Hill Giant Stronghold. They don’t yet know what it does in this context.

The Incremental Horror (DM Plan)

Lux should experience this as a slow-building dread, not a sudden gotcha:

Observation: The party sees possessed giants acting strangely — twitching, speaking in layered voices, eyes wrong. Lux notices similarities to his own situation.
The Worms: They see the worms — in a dead giant’s eye sockets, or wriggling on the ground near a body. Someone identifies what they do.
Giants Stepping Through Portals: Possessed giants, when threatened, step backward into portals and vanish — transported to Allabar. They don’t die. They disappear. This is deeply unsettling for someone whose soul is tethered to a jar by proximity.
“Could I Be Next?”: Lux realises: if a worm gets into HIS giant body, Vecna controls it. If Vecna sends the body through a portal to Allabar, Lux’s soul is either dragged there or severed from his jar. Either way, he’s trapped or dead.
The Moment: At a critical point, Vecna makes his move — either a worm attempts to enter Lux’s giant, or Vecna tries to puppet the body directly. Lux must choose: abandon the Fire Giant body (returning to his jar and his real body) or risk everything.

What Lux Doesn’t Know

The worms can potentially affect his Fire Giant body too
Vecna can control any parasitised giant at will
The portals lead to Allabar — another plane entirely
Being on another plane while Magic Jar’d means severed connection = death
His jar might even be a target — if Vecna knows about it

Resolution