What are support duties in LoL compared to DotA?
But if my lane carry doesn't have any issues with enemy on our lane... What should I do as a support in this situation?
You will almost never be in this situation. The thing you have to remember is that the second you leave your ADC alone in lane, he is now in a 1v2 situation. If the opposing botlane is at all competent, they will abuse their advantage mercilessly. It doesn't matter what kind of botlane they have (kill/poke/sustain), in a 2v1 situation they will push your ADC off the wave and prevent him from farming. If your ADC greeds for the farm, he'll most likely die. Both scenarios are a good way to start flame wars.
If your ADC is pushed to his tower in a 1v2 then he might be okay for a short while. However, most botlanes can then poke him down to the point that he has to leave or they'll dive him, with or without jungler support depending on their comp.
Short roams to mid or jungle to gank or invade can be useful but also leave your carry stranded so should only be done when he's recalling or can be relied upon to survive until you return.
The only situation in which you should truly leave botlane is when the ADC tells you to (for instance when he's freezing) or when you know he can take a 1v2. The latter will generally only happen when your carry is hyperfed and significantly more skilled than their botlane. Many botlanes can still combo a fed solo ADC who's out of position. You should also only do this if the potential rewards outweigh what you could do in the botlane. Don't leave your lane if you can easily kill their botlane again or deny them farm.
I'm answering from experience here. I routinely support a high-diamond ADC main in group games with friends from all skill levels. This usually means that our ADC does get hyperfed but it's very rare that he will be confident enough that he can outplay two people. Leaving a fed ADC alone so that he can't farm or can be easily ganked is a great way to trow your lead and piss off your teammate.
Or as this particular ADC main said upon learning of this question:
Honestly if you find playing support boring: don't play it. All you'll do is irritate your adc by running around trying to force fights.
If you do ever happen to be in this situation, typical things to do are to accompany the jungler in ganks, camp top/mid or invade to secure vision if you have the kit to survive that. By the time you reach this point the laning phase will typically be over anyway.
Basically supports are enablers for the carry. The support will ward to prevent ganks, and depending on the lane matchup either help harass the enemy or play defensively. Of course each support has different strengths and weaknesses so these are just general things most if not all supports would do. Some supports can be played both offensively and defensively, but it depends on which champions are being played and what they can do. If both lanes are playing defensive then yes it can get stale. You might look to start a fight if possible, otherwise just hang around and let your carry farm up.
As for your questions on the jungle, the camps are way too strong for a support to take. The crab in the river, while not dealing damage, has a lot of hp and resists so as a support it will take a long time to kill. This will either leave your carry open to being killed 2v1 in lane, or the enemy jungler could find and kill you as well. Generally supports will not roam to other lanes for the same reason, but you can roam if the time is right. Any time where your adc is not at risk you could look for a gank opportunity. If your lane opponents are both away or your adc is in base would be good times for a roam.
The very reason there is a duo lane bottom is to keep early pressure on dragon. So keeping the river and/or dragon pit warded both reveals possible ganks and prevents the enemy from sneaking in a dragon kill. This also goes for baron in the mid to late game after laning phase is over. You might be surprised how often people neglect to keep track of neutral objectives. Having someone on the team to give guidance can help keep everyone on the same page.
So general laning duties would be:
- Warding against ganks
- Harassing in offensive matchup
- Healing and/or shielding in defensive matchup
- Help keep time on dragon
Once towers start falling the laning phase is over or soon will be. You should have a sightstone by now, and a red sweeper trinket. While everyone on the team can help with vision, the support has the most tools to contribute. While you aren't warding you should be sticking with your team. What you do then will largely depend on the champion you play. So again just general rules to apply.
Mid to late game focus switches to:
- Keeping up your vision control
- Removing the enemy's vision
- Help guide the team on what objectives to focus
- Being with your team to help in fights
Should I try killing the little creature near baron for vision and speed or leave that to jungler?
No, the scuttle will take you forever to kill, leave it to the jungler for two reasons. One they kill it faster with the bonus damage of the machete. and two they get bonus gold and even bonus damage if they have devourer.
is it ok to try to lead as support in public game by helping jungler with timing or the timing in general with mentioning if dragon will be soon etc.
Yes this is a good thing to do. Your other 4 team members are focusing on getting their minions so you can provide them support by watching for mia's, pointing out where the jungler is and warning about roams and ganks.
Can I go kill some neutrals in forest on my own or it's bad idea and jungler would hate me?
Depending on what support you're playing you may not be able to. If you can then it's probably only worth it for Golems, but note where your jungler is and where he's going. If he just cleared blue and is at wraiths (raptors) then you probably shouldn't as they will likely be planning to take red and then Golems. Just be mindful of the jungler when you do this. But again there aren't too many supports that can easily take it. The time and health cost may be too great for it to be worth it. You'd likely make more gold using the support items gold gaining ability.