Moon Stone

The caster can transmute as many as three pebbles into luck charms that may be used at any time.

Liber Mysterium

The Netbook of Witches and Warlocks
By Timothy S. Brannan and The Netbook of Witches and Warlocks Team

Transmutation

Level: Witch 1, Cleric 1, Druid 1, Earth 1, Moon 1
Components: V, S, DF
Casting Time: 1 standard action
Range: Touch
Targets: Up to three pebbles touched
Duration: 1 day per caster level or until discharged
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)

Each stone adds up +1 to any roll (attacks, saves, spells or skill checks). The player must state their intent to use the Moon Stone before the action is done (before rolls).