River Herald Guide
LCIThe Lost Caverns of Ixalan/#209/2023Common
Colour IDMV 3
Current paper retail
Card Kingdom$0.35
Cardmarket€0.06
ManaPool$0.15
TCGplayer$0.14
MTGO (Cardhoarder)
retail$0.03 tix
Paper retail history (USD)
3 providers
Latest $0.35High $0.35Low $0.35▲ 0.0%
Market and collecting
Market overview
$0.14TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▲ 16.7%30d▲ 55.6%90d▲ 0.0%
90d high
$0.15
90d low
$0.09
Paper printings priced
1
Currently 1st
Cheapest paper printing
$0.14
The Lost Caverns of Ixalan
- Up 55.6% over the last 30 days on TCGplayer.
- Currently 7% below its 90 day high of $0.15.
- Foil copies of this printing carry a 14% premium over nonfoil.
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Compare printings (1 priced)
Gameplay and rules
Creature — Merfolk Scout
Vigilance
When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)
3 / 1
Keywords
VigilanceExplore
Card capabilities
Creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (6)
wotc10 Nov 2023
Once an ability that causes a creature to explore begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the exploring creature after you reveal a nonland card but before it receives a counter.
wotc10 Nov 2023
In some unusual cases, noncreature permanents may explore. For example, if the creature card returned by Defossilize is somehow not a creature once it's on the battlefield, it can still explore. You'll take all the same actions, and you may end up putting a +1/+1 counter on the permanent. (Note that some effects target a creature, and those effects would still require a legal target to have it explore.)
wotc10 Nov 2023
If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.
wotc10 Nov 2023
Some spells or abilities might cause a creature to explore multiple times in a row. If you reveal a nonland card when a creature explores and leave it on top of your library, then the creature explores again immediately afterwards, you'll reveal the same card again.
wotc10 Nov 2023
If an ability instructs a creature to explore, its controller reveals the top card of their library. If it's a land card, they'll put it into their hand. Otherwise, they'll put a +1/+1 counter on that creature, then choose to either leave that card on top of their library or put it into their graveyard.
wotc10 Nov 2023
If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature explores" trigger as appropriate.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
About this card
River Herald Guide
River Herald Guide is a Creature — Merfolk Scout, with mana cost {2}{G} (mana value 3).
Format legality: Commander: legal, Modern: legal, Standard: legal, Pioneer: legal, Legacy: legal, Pauper: legal.
Current headline price on TCGplayer: $0.14 (up 55.6% over 30 days).
Frequently asked
River Herald Guide FAQ
How much is River Herald Guide worth?
The current TCGplayer USD retail price for River Herald Guide is $0.14. It is up 55.6% over the last 30 days. Over 90 days it has ranged from $0.09 to $0.15.
What is the cheapest printing of River Herald Guide?
The cheapest currently priced paper printing is from The Lost Caverns of Ixalan at $0.14 on TCGplayer.
What set was River Herald Guide first printed in?
The earliest English paper printing that MTGPrices tracks is from LCI #209, released 2023-11-17.
Is there a foil version of River Herald Guide?
Yes. On this printing, foil copies trade at $0.16 versus $0.14 for nonfoil, which is 14% more expensive on TCGplayer.
Is River Herald Guide legal in Commander?
Yes, River Herald Guide is currently legal in Commander per Scryfall's legality feed.
Is River Herald Guide legal in Modern?
Yes, River Herald Guide is currently legal in Modern per Scryfall's legality feed.
Is River Herald Guide legal in Standard?
Yes, River Herald Guide is currently legal in Standard per Scryfall's legality feed.
What does River Herald Guide do?
River Herald Guide is a Creature — Merfolk Scout with mana cost {2}{G}. Its Oracle text reads: "Vigilance When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)".