A new mode idea: The Unseen Blade Mode (AS GOOD AS URF!!!!)

Map Played: Twisted Treeline (or summoner's Rift)

All the players will start with "Unseen Blade" passive which makes the player invisible, but slows the HP/Mana regen, cooldowns, exp and gold gained.

The passive will be off when you auto-attack, use skills, summoner's spells, items, place a ward, or get damaged in any ways. When the "Unseen Blade" passive is off, you gain the full vision of the map, and get doubled exp and gold from minions/time.

However, the "Unseen Blade" passive can be triggered again when you don't move or get damaged for 10 seconds (similar to Teemo's passive).

So there will be incentives for staying visible, but staying invisible makes you easy to assassinate the enemy champions.

Comment below for more suggestions!!