Colley guide Genshin Impact is the best build🍀

2 pieces: When using this set, Elemental Mastery is increased by 80 points.
4 pieces: For 8 seconds after activating an elemental reaction, the character wearing this set gains the following bonuses based on the elements of allied heroes in the party:

For each character with the same element, attack power is increased by 14%.
For each character with a different element, Elemental Mastery is increased by 50 points.
Each of these bonuses counts up to 3 characters in the calculation. The effect can occur once every 8 seconds and lasts even if the wearer is not on the battlefield.
This set is recommended for the Reactor role, as it greatly increases Elemental Mastery and Attack Power. Sprout skill damage and miniature Cuylen Anbar (with C6) also scale with attack power.

2 pieces: Increases elemental burst damage by 20%.
4 pieces: Activating an elemental explosion increases the attack power of all party members by 20% for 12 seconds. The effect does not stack.
This set does not directly affect the damage of Collea's Dendro attacks, but increases the overall damage when using her ultimate ability and at the same time strengthens the entire squad.

When using 2 items from this set, Elemental Mastery is increased by 80 points.
4 pieces: Activating an elemental reaction increases the elemental mastery of the entire party by 120 for 8 seconds.
This set of artifacts is a good choice for the early game until level 40-45. It provides an increase in Elemental Mastery for both Collea and the entire team, which increases the damage from elemental reactions.

Increases health (HP) by 16 percent. Increases the hero's damage dealt by 20% while there are nearby enemies. The bonus is provided even if the character is not participating in the current battle. This is a good choice for Collea's sub-damage role, as it provides her with critical hits.

When you use an ability or ultimate ability, Guidance of the Forest is activated, increasing Elemental Mastery by 60 for 12 seconds. This effect disappears when you switch to another hero. If the bonus expires or expires, one of the nearby enemies takes damage equal to 100% of the hero's attack value (this happens once every 20 seconds).

The bow is a good choice for Collea, as it amplifies the damage associated with Dendro's element, both through her passive ability and additional stats. Therefore, the bow is suitable for both the role of a sub-damager and a support role.

The bow has three states: Sunset, Fog and Dawn. In each of these states, damage dealt is increased by 6, 10, and 14 percent, respectively. To change the mode you need to hit the enemies. Modes can change no more than once every 7 seconds. The passive ability of the bow works even if Collei is not on the battlefield, so it will be useful if it is taken out of the pocket only to use the ultimate ability.

Critical hits have a 60% chance to generate elemental particles that restore 6 energy. This effect occurs every 12 seconds. Passively, the bow creates energy particles for the entire team, restoring their energy, and also restores energy to the hero himself. However, to unleash the full potential of the bow, it is necessary to have a critical hit chance of the character above 50 percent.

The bow increases the character's damage by 2-4% per second if the character is not on the battlefield. The maximum increase in damage dealt can be 20-40%. However, when the character enters the battlefield, the accumulated bonus begins to decrease at a rate of 4-8% per second until it reaches 0%.

Attack power weapons increase all damage dealt by the character while they are not on the battlefield. This pairs well with the first constellation and suits the archer, especially if she plays the role of a burst support, since her ultimate ability works even if she herself is inactive.

Increases the damage of elemental skills and elemental explosions by 24%. It also enhances Elemental Mastery, which increases Collea's elemental damage from Dendro, as well as enhancing her abilities. This is a great choice for the Reactor role, as it allows it to interact effectively with other elements and deal significant damage.

When using an elemental skill with a 40% to 80% chance, the cooldown of this skill is instantly restored. However, this can happen no more than once every 30 to 16 seconds.

This ability completely solves the problem of lack of energy, allowing the hero to quickly accumulate energy by repeatedly using the elemental skill. This makes it possible to activate the skill twice in a row and use it effectively in combat.

After using an elemental skill, the character's attack power is increased by 16%~32%. At the same time, the passive ability and the additional characteristic of the bow increase the damage from the Dendro element of the archer. This makes her more effective as a reactor, able to create strong reactions with other elements and deal significant damage.