A Touch of Guile

Hex Spell. Target touched foe takes 44...80 damage. If target foe was knocked down, that foe cannot attack for 5...8 seconds.

Touch Hex Spell. Deals 44...80 damage. Target foe cannot attack (5...7...8 seconds) if it was knocked-down.

Progression
Norn rank Armor-ignoring damage Duration	0 44 5 1 51 6 2 58 6 3 66 7 4 73 7 5 80 8 6 80 8 7 80 8 8 80 8 9 80 8 10 80 8

Acquisition

Synergy with touch or attack skills causing knockdown, such as Hammer Bash, Shock or Brawling Headbutt.

This skill is probably a reference to the "handcuffs" bug in Street Fighter II, as it can only be performed by Guile and prevents his opponent from moving or attacking.
The skill icon appears to be Jora in her Brotherhood armor.