Almost every champion in League of legends can play every role.
BUT they are not viable in all those roles.
What can Leona do?
Leona is GREAT for tank and GREAT Support roles. You can make a huge difference in the game if you are playing one of those two roles as Leona.
Can she Jungle or AP Carry?
Yes she can. But she shouldn't be doing it.
I'll not make too much enforce in showing you the right way to do the Jungle or the AP. But here some information any way =)
How to Jungle as Leona (This is a little out of date, but gives you the general idea)
Compilation of AP Leona
But why this is not a good idea?
She does an amazing damage? YES She does, and if you play Leona as an AP, she will wreak havoc, if you play her as jungle you will clear and gank really fine, even as an AD carry Leona. But, she is not mastered this way, because she loses for others AP like Annie and Brand for example. so is better you play AP Brand, and play Support/Tank Leona for real and play for fun AP Leona.
Here good guide for tank leona e for support leona.
You list primarily tanky supports, who were hit the hardest with the removal of Heart of Gold. This leaves two other GP/10 items: Philosopher's Stone and Kage's Lucky Pick. I ignored Avarice Blade as I don't feel it compliments the support role.
A Philo stone can build into Shurelya's Reverie, Eleisa's Miracle, or Ohmwrecker. Shurelya's is still a great support item, and Eleisa's reduces the cooldowns of the summoner spells Heal, Clarity, and Clairvoyance. It can also free an inventory spot if purchased early enough! Ohmwrecker is outshined by both items, and I don't recommend buying it on a support.
Kage's Lucky Pick turns into Shard of True Ice, Twin Shadows, Morellonomicon, or Will of the Ancients. The first two are most viable on a support, and the Shard continues to provide GP/10.
So a lot of things affect whether GP/10 is still viable.
For a Philo Stone:
- Did you take Heal or Clairvoyance?
- Do you need extra sustain?
- Does your team need a Shurelya's? Is anyone else buying one?
For Kage's Lucky Pick:
- Does your champion benefit from extra AP?
- Do you need additional CC?
Another new item is the Sightstone. For an investment of 950 gold, you can place up to 2 wards at a time, with each ward lasting 3 minutes. The Sightstone holds 4 wards total and refills when you return to base. This breaks down to 50 gold/minute, and starts saving money after 19 minutes (assuming you immediately place wards when available). It also provides +180 health, making it a strong choice for tanky supports.
Previously, GP/10 items were essential to compensate for the cost of wards. This is largely mitigated with the usage of a Sightstone, freeing money for other items.
A Philosopher's Stone costs 700 gold and pays for itself in 23.33 minutes. Kage's Lucky Pick costs 765 and pays for itself in 25.5 minutes. These times are halved if you sell the item. Because it takes so long to make money from GP/10 items, it's best to buy them as early as possible.
Compare this to the gold granted from kills/assists. A champion who hasn't been killed is worth 300 gold, and 50% of that for an assist. The more times a champion is killed, the less money the kill rewards, with a minimum of 15 gold.
Since 2 GP/10 items provide 60 gold/minute, you have to get a 150 gold assist every 2.5 minutes for assists to equal GP/10 items. You can get an additional 5 GP/10 from Quints and masteries, resulting in 90 gold/minute and needing an assist every 1.66 minutes.
The new pick-pocket mastery offers an additional avenue to generate gold. Unfortunately, this isn't very viable on melee supports.
While supports are no longer required to get GP/10 items to support expensive ward-buying habits, these GP/10 items are still cost-efficient for longer games AND they upgrade into items that are very useful for most supports.
Ultimately, the decision to buy GP/10 items comes down to play-style and preferences. If you prefer to play aggressively and need extra stats to stay alive, skip GP items. If you're trying to maximize gold gained, GP/10 is still the better choice (unless you can get an assist every 1.6 minutes!).
tl;dr: GP/10 is still very viable, especially since those items build into new support-focused items. However, it's no longer a necessity since the Sightstone makes warding much cheaper.
Best Answer
It highly depends on the game, but in most cases you were ahead and that fact got you the baron buff.
Baron buff currently gives you increased Attack Damage and Ability Power (which scales over time)
That leads to the fact that you will probably will lose every teamfight. If there are a lot of minions around, you should definitly avoid to fight a team that has the baron buff.
Just try to play defensive and make picks when an enemy is out of position.