# First Blood

Gem · Keystones · https://jds-game.com.br/portal/wiki/gemas/primeiro-sangue?lang=en

A gem and a full set share the same slot, and the gem takes priority. In battle only the first active keystone counts.

- As a gem: Tier VI, Prismatic socket only
- Prismatic socket: always on Necklace, Ring; on other pieces the last socket may roll prismatic: Epic 10% · Legendary 35%
- Active limit: 1 active keystone per hero
- Fusion, cutting and chest: [Gems](https://jds-game.com.br/portal/wiki/guia/gemas?lang=en)

#### What it does

Opens the fight with an edge: more attack in battle and a guaranteed crit on the first blow of a duel.

#### Where it works

Battle is every march with a hero (PvE, PvP and oases), resolved at once by the strength of both sides. Duels are blow by blow.

| Mode | Effect |
|---|---|
| Battle | Hero attack +10%. |
| GvG duel | The hero’s first landed blow in the duel is a guaranteed crit. |
| Colossus | No effect: the Colossus does not apply keystones. |

#### How to get it

- As a gem: no active source right now

#### Other keystones

- [Bulwark Thorns](https://jds-game.com.br/portal/wiki/gemas/espinhos-do-baluarte?lang=en)
- [Bloodsucker](https://jds-game.com.br/portal/wiki/gemas/sanguessuga?lang=en)
- [King's Breath](https://jds-game.com.br/portal/wiki/gemas/folego-do-rei?lang=en)
- [Final Judgment](https://jds-game.com.br/portal/wiki/gemas/juizo-final?lang=en)