When you join someone else’s rally or reinforce a garrison, one hero skill of yours can boost the whole group. Picking the right one is one of the cheapest power gains in the game.
TL;DR Put Jessie (or Jasser/Jeronimo) first when joining attacks, Patrick or Sergey first when reinforcing, and level that hero’s first expedition skill, not their stars.
When you join a rally, only the hero in your first march slot contributes, and only their first expedition skill. Your second and third heroes add nothing.
Only a few joiner skills apply per rally, and higher skill levels get priority. One guide puts the limit at four.
One guide claims joiner skills don’t apply at all; most guides and players disagree. Compare battle reports if you’re unsure.
| Hero | Rarity · class | First expedition skill | At max level |
|---|---|---|---|
| Jessie | Epic · Lancer | Stand of Arms | +25% damage dealt by all troops |
| Jasser | Epic · Marksman | Tactical Genius | +25% damage dealt |
| Jeronimo | Gen 1 Mythic · Infantry | Lone Wolf | +25% damage dealt |
| Seo-yoon | Epic · Marksman | — | +25% troop attack |
One guide treats “damage dealt” and “attack” as separate modifiers, so Seo-yoon can stack alongside a damage joiner in the same rally.
| Hero | Rarity · class | First expedition skill | At max level |
|---|---|---|---|
| Patrick | Epic · Lancer | Super Nutrients | +25% troop health |
| Sergey | Epic · Infantry | Defenders’ Edge | −20% damage taken (4% at level 1) |
One guide says Patrick’s skills also add attack; others list health only. Some later-generation heroes have defensive first skills too, so compare exact skills before replacing these two.