The Basics
While teams can vary with what specific heroes they use, there are some base guidelines to how most teams should be constructed.
Jungler
A jungler is necessary for practically any team. Junglers become very powerful in the late game and are able to give XP buffs to the whole team. The best junglers are stack characters, as stack characters gain huge late game buffs for killing jungle enemies.
Ganker
A ganker is somebody who patrols lanes and helps defend when needed. They need to be able to make kills and get out quickly. This means that any heroes with high burst damage are very strong gankers.
Support
A support character is very helpful, as it can protect vulnerable characters. Without a support character, your squishy laner characters will die quickly. Any heroes with healing or shielding effects are strong support characters.
Tank
The goal of a tank is to soak up a lot of damage. While I find them pretty poor, they can be very helpful when played correctly as they can protect your laners as effectively as a support character.
Crowd Control
Crowd control characters are characters that use AoE and stun effects on lots of little enemies.
Laners
Laners are people who push and defend lanes. They are the core of your team. You will have a very tough time winning without a laner on each lane. The goal of a laner is to deal as much damage as possible.
The Best of Each
Now that you know what each position is, you need to find the characters that do each thing effectively.
Dekker- Crowd Control
Feng Mao- Jungler/Ganker/Laner
Gadget- Laner
Gideon- Laner
Grux- Jungler/Laner
Howitzer- Laner/Crowd Control
Kallari- Ganker/Laner
Murdock- Laner
Muriel- Support
Rampage- Tank/Jungler
Sevarog- Tank/Jungler
Sparrow- Laner
Steel- Tank/Crowd Control/Laner
Twinblast- Ganker/Laner
Jungler
Feng Mao and Sevarog are probably the best junglers because they can gain stacks, which allow them to deal massive damage in the late game. Rampage is next, as he can gain XP quickly in the jungle because his regen allows him to not have to recall as much. Grux is probably the worst of the viable junglers, as his stack effect only reaches 200 health and is therefore relatively insignificant.
Ganker
Kallari is probably the most effective straight ganker, as he can deal lots of burst damage and flip back into the shadows. Feng Mao is a pretty strong ganker simply because he is both a ganker and a jungler, meaning you don't need to take up valuable team space by using him. Twinblast is also pretty good at ganking, as he deals decent burst.
Support
Muriel is the only true support character, and is powerful enough that probably every team should play her.
Tank
Steel is probably the best tank, as he can soak up the most damage of all of the characters. Sevarog is a fine tank, but is better used in the jungle. Rampage is a pretty strong tank, but he can't take as much heat as Steel.
Crowd Control
I don't recommend using a straight CC character because they are pretty useless against heroes, so I don't find Dekker to be that strong. Steel is a very strong crowd control character and couples as a tank, making him ideal. Howitzer's slow effects are decent CC, but Steel's stuns are better in my opinion.
Laner
Many characters can lane and be effective, but some shine brighter than others. Murdock is easily the best laner, as his ultimate ability deals ridiculous amounts of damage. Grux, Feng Mao, Kallari and Steel all can be effective laners, but are better used elsewhere. Every other laner is fairly interchangeable and is mostly a playstyle choice.
Hero Synergy
When building a team, you can't just throw a bunch of different heroes in and expect it to work. You have to combine abilities to make your team work fluidly. This is why I recommend a combination of CC and AoE, as those work together quite well. I'd also recommend having a Tank, a Support and a DpS all working one lane, as the three roles combine quite effectively. I personally would combine Steel, Gideon and Muriel, as Steel's CC and Gideon's AoE combine effectively (Stun+Black Hole!) and they all fill the three primary laning roles.
The Best Team Composition
Now that you know the best characters at each spot, as well as the synergies that work well, you can start building a team. When starting off with a team, you need to have a Murdock and a Muriel, as they are just too powerful. You also want somebody who can jungle, which gives us either Sevarog or Feng Mao. I personally am a fan of Sevarog, as his stacks give him more lategame benefits and ganking with his ultimate is extremely powerful, as the knockback from it can push enemy heroes into a trap. Also, I find that the corruption affinity is more powerful than other affinities. Now that you have these 3 pieces, you need two more characters. If you want to take my advice and add Steel and Gideon, that would probably be the best option. However, you can use two DpS characters like Twinblast and Sparrow instead. Thirdly, you could try it with a DpS character or Tank laning and Kallari or Twinblast ganking. Personally, I find that the best composition is thus:
Sevarog- Ganking and jungling in the early game, laning in the late game. Replacements: Feng Mao, Grux, Rampage
Murdock- Laning DpS. Replacements: Twinblast, Kallari, Sparrow
Muriel- Laning support. Replacements: None
Steel- Laning tank/CC. Replacements: Dekker (for CC), Rampage (for tanking)
Gideon- Laning DpS/AoE. Replacements: Twinblast or Sparrow for DpS, no replacement for AoE
I like how it looks like so far. I'd like to see it expanded with probably more analysis of team compositions. Like pairing Steel and Dekker to zone enemies and combining then with Murdock and TwinBlast to clean that one guy inside the Dekker's Fence.
If you gonna keep going I'd love to see heroes images embedded for better readability.
Thanks for the suggestion! I added a hero synergy section, but instead of using Dekker as an example, I thought that Gideon would be a better combo with Steel because his E and his ult are both ridiculous against stunned enemies.
@Feenyx, Looking good bro. I am creating a guide similar to yours --> http://paragon-game.com/build-guides/team-composition-suggestions
-Maybe could I suggest we make a All-In-One guide that we can both edit? LMK if your interested by commenting.
SmokeyJay :)
That sounds pretty cool idea SmokeyJay. Since creation of such guides is restricted now I can initiate such a guide for you to work in a team on one topic. Just let me know.
@George, yeah bro could you open one up? But, could you limit it not to the pub? Like assign just me and him for now to get a basis.
@SmokeyJay I'd be down for that.
Folks, I have created this yet empty One-Stop Team Composition Guide. Feel free to fill it out. Since SmokeyJay is already able to publish revisions Feenyx was also promoted to receive enough permissions and make new revisions of that guide published.
@SmokeyJay, I do not see enough reasons so far to make One-Stop guides private to some contributors. For this reason there are ordinary guides anyone can create and be sure no one except moderators are able to edit those. One-Stops are designed for contribution by all who are interested. Though there is a tool to control that to preserve precious community's effort.