Building 7 rooms

TUFTED WEED:     PLANT
PARASITE SPHINX: MONSTER
PRISMATIC OOZE: VERMIN
BRIMSTONE ELF: HUMANOID
FOREST DEMON: BOSS
QUESTING WOLF: CRITTER

G
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B--A--D
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C--E
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F
Room A.
SMELL: Metallic tang of hour-old blood.
GUNGLEY the ENERGETIC PAINTER, wearing GAUNTLET OF INTELLECT, meditating atop stone pillar to unlock its full power, which they intend to use to conquer world.
Room B.
One of those Ripley's Believe It Or Not rooms where there's a row of mirrors along one wall and once you go around the corridor you can see through them. Couple of BRIMSTONE ELFs behind mirrors making fun of PCs, will flee as they approach. If the PCs linger, SHIRFIANA the PITIABLE ASSASSIN will come through on the other side of the mirrors and accidentally reveal something they would kill to keep secret.
Room C.
Room shaped like inside of tetrahedron. Anyone standing in etched circle in room's centre teleported to random other room of dungeon. Can be controlled by fetching tetrahedronal crystal in room F, will grant access to secret treasure chamber w/ no doors leading to it. Someone has to stay behind to teleport you out again.
Room D.
Space is bent in such a way that walking down this tunnel will bring you out in room C.
Room E.
UDDIVER the AMBITIOUS THIEF attempting to domesticate QUESTING WOLF, with limited success. Has been reliably informed that QUESTING WOLF's favourite food is TUFTED WEED, will pay semi-handsomely for samples.
Room F.
Completely empty room. Or is it? Yes. Yes it is.
Room G.
SIGHT: The roots of an ancient tree emerge from the roof.
Hideout for rebellious BRIMSTONE ELFs, unwilling to recognize authority of FOREST DEMON, want to establish tiny republic in forgotten dungeon crevice.