You attempt to steal an attended or unattended weapon or item weighing no more than 50 lbs. If the item is unattended, you succeed automatically and can either place the item in your possession in the same round, or transfer it to any point you designate within range.
If the item is attended or held, then the creature attending it makes a Reflex save to react quickly enough to keep hold of the item. If the creature fails, the item falls from its grasp. If it fails the save by 4 or more, the item automatically appears in your possession or is transferred to any point you designate in range.
For every 2 additional power points you spend, the Difficulty Class increases by 1.