Non-obvious spell effects: Mage spells: Phase Door: short-range teleport. Find Hidden Traps/Doors: also detects stairs. Sleep I: sleep one monster in a given direction. Recharge Item I: fewer charges than Recharge Item II, and more likely to fail. Sleep II: sleep all monsters adjacent to player. Sleep III: sleep all monsters with a line of sight to player (including invisible ones). Word of Destruction: obliterates everything within 15 spaces of the player; Balrog will teleport to another level. Priest spells: Bless: +2 to AC, and +5 to chance to hit (equivalent to +1-2/3 bonus on weapon) for a short time. Blind Creature: blinded creatures wander around confused until they recover. Portal: medium-range teleport. Chant: double duration Bless. Sanctuary: sleep creatures adjacent to player. Protection from Evil: prevents any evil creature of the player's level or lower from attacking the player. Earthquake: causes random walls and ceilings in the area to collapse, possibly injuring anything nearby. Turn Undead: all undead of the player's level or lower, and some of higher level, will attempt to flee [in 5.5.0 and earlier versions, they will be confused] Prayer: quadruple duration Bless. Dispel Undead/Evil: affects all undead/evil within line of sight (even invisble ones in 5.x versions), damage is from 1 up to 3x player's level, 1-60 from scroll or staff. Glyph of Warding: creates a glyph which monsters cannot enter, but have a small chance of breaking. Holy Word: heals player completely, cures poison and fear, and dispels evil for 1 to 4x player's level. [In 5.5.1 and later versions, also restores all stats, and makes player invulnerable for 3 turns.]