The area that is always fresh as people constantly come up with new and exciting teams, using newly-added dragons, or by refreshing old dragons and finding a new niche for them.
Because the Colosseum changes so much, it is difficult to give team-building advice. So instead, I will showcase some popular strategies and easy-to-use dragons which you can try out to get a feel of how to proceed on your own. Many teams use a mix of these strategies during battle.
See also the page on Team Structure.
Dark or Water Wonder (or both!) are the easiest dragons to initially use in Colosseum. You will likely have one built for Adventure, and you can put him to use in Colosseum right away.
Water Wonder's high damage output, especially, make him an excellent attacker for almost any kind of team.
Due to Wonder's high popularity and ease of access, however, most teams have a way to counter it, be it Water, Earth, or Dark Cupid's dispel, Dark Party's buff remover, or a simple Water Lambgon to silence Wonder and kill it before it can ever zombie in the first place. So you may not wish to use Wonder for long.
A Wonder team for Colosseum is similar to one you would use in Adventure, although using Witch is not recommended. In Colosseum, you have a timer of 3 minutes, and Witch uses up a precious team slot that could go to another attacker or better support.
One of the simplest and most effective strategies in Colosseum is to buff your own dragons' stats. The most straightforward is by boosting your attackers' ATK or Critical DMG stat. You can do this with your healer, such as Earth Smart or Fire or Dark Totem, or with support dragons such as Light Pharaoh.
Some attackers boost their own stats with their passive skills. Water and Dark Catsgon give themselves 2x ATK buffs, while Water Arkana boosts his own ATK Speed and Dark Arkana boosts his own Critical Rate.
Defense-based teams also enjoy some popularity. These teams make use of Defense Type dragons whose drag skills are based on their DEF, such as Fire Knight. Dark Venezie is an excellent healer for these teams as it boosts allies' DEF with its heal, as does Earth Totem.
Supports for these teams can decrease the opponents' ATK so that the opponent deals even less damage to an already high-Defense team. You can use dragons such as Fire Godium or Water Cupid for this purpose.
ATK debuffs can limit the amount of damage the opponent does so that you can defeat the opponent team before it defeats yours. It can be as simple as using the Fire or Dark Cupid you already use for mana, or by attaching a support dragon such as Water Cloud or Earth Gale. In addition to debuffing ATK, you might also debuff Critical DMG and Critical Rate.
DEF debuffs can help your dragons to defeat the opponent faster, especially if they have a bulky dragon such as a Power dragon. This is something Fire Godium offers in addition to his ATK debuff. There are also attackers that can decrease their opponents' DEF such as Light Clown. This also helps against high-defense teams, as you may find it difficult to take them out otherwise.
Support dragons that offer recovery debuff can be excellent, as it makes it difficult for the opponent to recover from attacks. Dragons such as Earth Cupid can do this, as can Water Gale. Note that these dragons offer other utility in addition to decreasing recovery (Cupid has mana regeneration, Gale can remove buffs, silence the enemy, and decrease DEF besides) - Recovery debuff alone is not desirable in a dragon.
CC refers to limiting or restraining your opponents through the use of status effects such as stun, sleep, and silence. Dragons who have a CC effect will have it according to the duration defined by the skill that applied it, or they may have it removed by an ally dragon (as long as the ally is not affected by any CC themselves).
The status effect considered most useful is stun, as stunned dragons cannot use any of their skills, drag or passive, or even use normal attacks. Sleep works the same, but sleeping dragons wake up as soon as they are hit by any kind of damage. Silenced dragons cannot use their skills, but they can still deal normal attacks.
Some of the best dragons in the game are so impressive because of their passive skills. CC can completely nullify their passive skill awhile. For example, the key to Iris's success is her passive which makes her invulnerable when she falls below 50% HP. If CC is applied to her, she will not be able to use her invulnerability skill, and may even die in one blow!
CC teams make use of one or two dragons to apply the initial status effect. Light Solar can stun enemies, while Fire Solar can silence them. These two Solars are popular on CC teams. They are already get attackers thanks to their drag skill damage scaling on Critical DMG, they also deal more damage to opponents who are stunned (Light) or silenced (Solar).
You might also use other attackers that can provide the same CC, such as pairing Fire Solar with Dark Lololli or Light Solar with Earth Lololli (Solar and Lololli also get a team bonus). Other attackers that have stun or silence are Water Wonder, and Water and Dark Demong & Gargoyle.
There are also supports that provide stun or silence in addition to their usual utility. Earth and Light Bagma silence, as well as the commonly-used Water Lambgon. Light Party can stun opponents as well. The Fairy line are healers that can provide silence.
Nerroth is a great teammate on a CC team due to its ability to copy status effects from its targets to 2 other dragons. So say your Light Solar has successfully stunned two dragons. If Nerroth then attacks those two targets with its drag skill, up to two other dragons in the opponent's party can also get stunned (Effect Resistance/Accuracy calculations apply).
Of course, your entire team does not need to be tailored to apply status effects to the opponent. In most cases, 2 or 3 dragons whose roles are either to apply the CC or take advantage of it, are sufficient.
This strategy makes use of dragons that have the ability to resurrect their comrades. Resurrection makes a team difficult to kill right away. As long as the resurrecting dragon remains alive, at least one other teammate has a second chance as a backup.
Double resurrection is also effective, where two dragons on the same team are capable of resurrecting their teammates. This ensures that the strategy can't be foiled by dint of the resurrecting dragon being knocked out early on.
Dark Totem is perhaps the most popular resurrector thanks to his massive heals, but he is unfortunately quite frail. This can usually be remedied with Survival runes. Other resurrectors that can be used, including in tandem with Dark Totem, include Water Enix, Light and Earth Teddy, and Light Venezie. Enix and Teddy are bulky, but only heal two targets at a team. Venezie and Totem are frailer, but heal more teammates.
Verna, a topaz dragon, is probably the best resurrector, as her heal is based on her DEF stat, she heals 4 teammates at one time, and when she resurrects a dragon, that dragon is granted invulnerability so that it cannot be easily taken out again.
Almost all teams enjoy having resurrection, but a very popular attacker for resurrection teams is Iris. Thanks to her invulnerability passive, she is difficult to take down in a single burst. This is especially true when she is equipped with Survival runes, and even more so if she is partnered with a resurrector. On the first hit, her passive skill activates. On the second hit, her Survival rune activates. On the third hit, she dies but is revived by a teammate. In a team like this, Iris becomes even more a force to be reckoned with than usual!
You earn Honor Points every time you battle in the Colosseum. You earn:
You can buy Skill Slimes and Eggs with Honor points. It is highly recommended that you use them to buy Skill Slimes over Eggs, as they are effectively free Skill Slimes every week, and Skill Slimes are extremely precious.