Shadow

Intelligent, incorporeal (but not undead) monsters that look like shadows. Able to slightly change their shape.

AC7 [12], HD2+2* (11hp),
Att 1 × touch (1d4 + strength drain), THACO 17 [+2],
MV 90’ (30’), SV D12 W13 P14 B15 S16 (2),
ML 12, AL Chaotic, XP 35, NA 1d8 (1d12), TT F

• Surprise: On a 1–5.
• Strength drain: Victims lose 1 STR per hit. Recovers after 8 turns. If reduced to 0 STR, the victim becomes a shadow.
• Mundane damage immunity: Can only be harmed by magical attacks.
• Spell immunity: Unaffected by charm and sleep spells.

Source: Classic Fantasy