What is "Efficiency"?

Efficiency measures how effective your use of vision tool is. Are you maximizing use of your warding trinket and placing Control Wards in a timely manner? Multiple Control Wards only count after the others have been used. 

Vision tools include:

• Warding Totem
• Sweeping Lens (becomes Oracle Alteration)
• Farsight Alteration)

This score is neutral (gray) because sometimes it's advantageous to hold onto a ward, and we can't measure that context.

To increase this score, place more wards more often. If you're constantly sitting at 2 charges, you're wasting potential ward placements that could be saving your life