Ertha Jo, Frontier Mentor
OTJOutlaws of Thunder Junction/#203/2024Uncommon
Colour IDMV 4
Current paper retail
Card Kingdom$0.35
Cardmarket€0.11
ManaPool$0.15
TCGplayer$0.23
Buylist (dealers pay)
Card Kingdom$0.02
MTGO (Cardhoarder)
retail$0.03 tix
Paper retail history (USD)
3 providers
Latest $0.35High $0.39Low $0.35▲ 0.0%
Market and collecting
Market overview
$0.23TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▼ 4.2%30d▼ 14.8%90d▲ 9.5%
90d high
$0.30
90d low
$0.21
Paper printings priced
1
Currently 1st
Cheapest paper printing
$0.23
Outlaws of Thunder Junction
- Down 14.8% over the last 30 days on TCGplayer.
- Currently 23% below its 90 day high of $0.30.
- Foil copies of this printing carry a 65% premium over nonfoil.
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Play
Compare printings (1 priced)
Gameplay and rules
Legendary Creature — Kor Advisor
When Ertha Jo enters, create a 1/1 red Mercenary creature token with ": 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.
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Card capabilities
CreatureLegendary creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (9)
wotc12 Apr 2024
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.
wotc12 Apr 2024
If the ability divides damage or distributes counters among a number of targets, the division and number of targets can't be changed. If you choose new targets, you must choose the same number of targets.
wotc12 Apr 2024
The copy made by Ertha Jo's triggered ability is created on the stack, so it's not "activated."
wotc12 Apr 2024
Any choices made when the ability resolves won't have been made yet when it's copied. Any such choices will be made separately when the copy resolves.
wotc12 Apr 2024
If the ability is modal (that is, if it says, "Choose one —" or similar), the mode is copied and can't be changed.
wotc12 Apr 2024
The source of the copy is the same as the source of the original ability.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
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About this card
Ertha Jo, Frontier Mentor
Ertha Jo, Frontier Mentor is a Legendary Creature — Kor Advisor, with mana cost {2}{R}{W} (mana value 4). Printed 2 times across MTG sets.
Format legality: Commander: legal, Modern: legal, Standard: legal, Pioneer: legal, Legacy: legal, Pauper: not_legal.
Current headline price on TCGplayer: $0.23 (down 14.8% over 30 days).
Frequently asked
Ertha Jo, Frontier Mentor FAQ
How much is Ertha Jo, Frontier Mentor worth?
The current TCGplayer USD retail price for Ertha Jo, Frontier Mentor is $0.23. It is down 14.8% over the last 30 days. Over 90 days it has ranged from $0.21 to $0.30.
What is the cheapest printing of Ertha Jo, Frontier Mentor?
The cheapest currently priced paper printing is from Outlaws of Thunder Junction at $0.23 on TCGplayer.
How many printings of Ertha Jo, Frontier Mentor are there?
Ertha Jo, Frontier Mentor has been printed 2 times in English paper sets that MTGPrices tracks.
What set was Ertha Jo, Frontier Mentor first printed in?
The earliest English paper printing that MTGPrices tracks is from OTJ #203, released 2024-04-19.
What is the newest printing of Ertha Jo, Frontier Mentor?
The most recent English paper printing that MTGPrices tracks is from PLST #OTJ-203, released 2026-10-19.
Is there a foil version of Ertha Jo, Frontier Mentor?
Yes. On this printing, foil copies trade at $0.38 versus $0.23 for nonfoil, which is 65% more expensive on TCGplayer.
Is Ertha Jo, Frontier Mentor legal in Commander?
Yes, Ertha Jo, Frontier Mentor is currently legal in Commander per Scryfall's legality feed.
Is Ertha Jo, Frontier Mentor legal in Modern?
Yes, Ertha Jo, Frontier Mentor is currently legal in Modern per Scryfall's legality feed.