I think that having a summoner spell would be a good idea, but you can't really have a single-use spell because that basically gives you only one spell you can continuously use. Maybe a little higher cost is the answer to make it less over-powered, and yes, maybe only after 40 minutes can it be available to you. These are all great ideas, keep it up everyone.

I think that you should be able to buy upgrades for your turret, increased range, damage etc, this would allow a good defense if you solo queue alot and your teammates feed.

Makes me think of Demigod in a way.

Summoner spell.

300 second cool down.

Restore 150 Health to all turrets and inhibitors (if the turret is destroyed it rebuilds with 150 life points)

I have another idea, how about for 9001 gold you can buy another nexus, and it's made of cheeseburgers.

If a game lasts 55 min, the last thing I want to do is delay it even further by having any team buy back a turret. Could not disagree more...

I like the idea of a long cool down summoner spell that slightly heals and maybe increases attack damage but not speed, sort of like that tower defense spell they already exists with the shield but mixed with Heimers ult. So you get increased attack (not speed) because late game towers do **** dmg anyway anyway and a small heal sorta like rally...but for towers...actually just make rally affect towers