Masteries: invent a mastery and post it here

Ok so basically just title

Suggest a mastery, tell what its uses are/ who its for and post it, but please keep it short k. Ill start

A utility keystone mastery

Visionary Your wards last 30 seconds longer and gain 1 health bar

Uses: Well longer vision time of coarse, so get more out of your vision options. But it's secondary use would be to make it more difficult to kill the wards when you place them especially when champions have sufficient attack speed they can kill it before it stealth's. Another thing this does it make them more difficult to clear when contested.