[Arkham]

I'm digging the changes Bats suggested as well. So something like this:

GLYPH OF UTILITY: BOLAS
(Movement Prevention, Defense -1)

EQUIPMENT GLYPH
Start the game with 3 black Bolas Markers on this card. Any time an opponent would begin the movement of a figure within 4 clear sight spaces of this figure, you may first roll the 20-sided die. If you roll 10 or higher, place your Bolas Marker on the chosen figure's card. A chosen figure that has your Bolas Marker on its card cannot move and must roll 1 fewer defense die. When the chosen figure receives a wound or is destroyed, remove that black Bola Marker from the game.