Key ability: Charisma
Use Magic Device represents the ability to activate or operate magic items without relying solely on the user’s normal magical training or nature.
A caster who knows a spell can activate a scroll containing it without a Use Magic Device check or expending a spell slot. The scroll uses the spell’s normal casting time and is consumed when successfully activated. A caster who does not know the spell must succeed at a Use Magic Device check against DC 10 + spell level + caster level.
To activate a wand, a character must succeed at a Use Magic Device check against DC 15 + spell level + caster level. Each successful activation expends one wand charge.
At 5 ranks, Use Magic Device grants a +2 Synergy bonus to Lore (Arcana) checks to identify or understand a magic item.