User blog comment:Willbachbakal/(Item Concept) Another Look at Vision/@comment-8506165-20140723152503/@comment-1330314-20140723153301

Because you'd be able to destroy wards without the need for a dedicated item? Rather than needing to pop out a red trinket or a vision ward to clear wards, and risk getting caught in enemy territory if you miss one, you'd be able to see immediately where the enemy wards would be, and so would be able to get rid of them. The ward cap would prevent the winning team from over-warding, and the cheap and universal access to late-game warding means that both teams would be able to output the same amount of wards, regardless of how far ahead or behind they are.