---
name: "Ertha Jo, Frontier Mentor"
mana_cost: "{2}{R}{W}"
cmc: 4
type_line: "Legendary Creature — Kor Advisor"
colors: []
color_identity: ["R", "W"]
keywords: []
set: "OTJ"
set_name: "Outlaws of Thunder Junction"
collector_number: "203"
rarity: "uncommon"
artist: "Michal Ivan"
oracle_id: "0a66ce8b-af99-411f-8ecb-52a5d2f6af3d"
canonical_url: "https://avascry.com/printing/ertha-jo-frontier-mentor-otj"
legalities:
  commander: "legal"
  standard: "legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Ertha Jo, Frontier Mentor
- **Mana Cost:** `{2}{R}{W}` (CMC: 4)
- **Type:** Legendary Creature — Kor Advisor

## Oracle Text
When Ertha Jo enters, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.

## Top 4096-Dim Neural Synergies
1. [Prickly Pair](/printing/prickly-pair-otj.md) — Creature — Plant Mercenary
2. [Prosperity Tycoon](/printing/prosperity-tycoon-otj.md) — Creature — Human Noble
3. [Frontline Heroism](/printing/frontline-heroism-plst.md) — Enchantment
4. [Ember Island Production](/printing/ember-island-production-tla.md) — Sorcery
5. [Akroan Crusader](/printing/akroan-crusader-uma.md) — Creature — Human Soldier
6. [Boros Challenger](/printing/boros-challenger-grn.md) — Creature — Human Soldier

## Printing Details
- **Set:** Outlaws of Thunder Junction (OTJ) #203
- **Rarity:** Uncommon
- **Artist:** Michal Ivan

## Format Legalities
Commander: `legal` | Standard: `legal` | Modern: `legal` | Pioneer: `legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `not_legal`

## Official Rulings
- *(2024-04-12)* Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities (such as equip) are activated abilities and will have colons in their reminder text.
- *(2024-04-12)* If the activated ability's cost contains a choice, such as a creature to sacrifice or a number of counters to remove, the copy uses that same information. You can't pay the cost again, even if you want to.
- *(2024-04-12)* If the ability is modal (that is, if it says, "Choose one —" or similar), the mode is copied and can't be changed.
- *(2024-04-12)* The source of the copy is the same as the source of the original ability.
- *(2024-04-12)* The copy made by Ertha Jo's triggered ability is created on the stack, so it's not "activated."
- *(2024-04-12)* The copy will have the same targets as the ability it's copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. The new targets must be legal.