Cogliostro (v3)

{c} Reach 15ft
{c}Anchor: On hit: Melds into a solid object. The anchor
can support up to 600 lbs.
{c}Study: Succeed on a DC 17 Insight check and gain
advantageagainst the target of this ability. Also learn
one Resistance or Immunity of the target.
{w}Steal Shadow: 1/day: In dim light or darkness, teleport through shadows to a
point within 60ft to a space within 5ft of a creature and make
a DC (?) Sleight of hand check to steal one
item from that creature.