---
name: "River Herald Guide"
mana_cost: "{2}{G}"
cmc: 3
type_line: "Creature — Merfolk Scout"
colors: ["G"]
color_identity: ["G"]
keywords: ["Vigilance", "Explore"]
set: "LCI"
set_name: "The Lost Caverns of Ixalan"
collector_number: "209"
rarity: "common"
artist: "David Astruga"
oracle_id: "b9687fef-4cb2-4bf1-91ad-49dada07f4d6"
canonical_url: "https://avascry.com/printing/river-herald-guide-lci"
legalities:
  commander: "legal"
  standard: "legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "legal"
---

# River Herald Guide
- **Mana Cost:** `{2}{G}` (CMC: 3)
- **Type:** Creature — Merfolk Scout
- **Power/Toughness:** 3/1
- **Keywords:** Vigilance, Explore

## Oracle Text
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.)

## Top 4096-Dim Neural Synergies
1. [River Herald Scout](/printing/river-herald-scout-lci.md) — Creature — Merfolk Scout
2. [Merfolk Branchwalker](/printing/merfolk-branchwalker-xln.md) — Creature — Merfolk Scout
3. [Cenote Scout](/printing/cenote-scout-lci.md) — Creature — Merfolk Scout
4. [Tishana's Wayfinder](/printing/tishanas-wayfinder-xln.md) — Creature — Merfolk Scout
5. [Seeker of Sunlight](/printing/seeker-of-sunlight-lci.md) — Creature — Merfolk Scout
6. [Jadelight Ranger](/printing/jadelight-ranger-prix.md) — Creature — Merfolk Scout Ranger

## Printing Details
- **Set:** The Lost Caverns of Ixalan (LCI) #209
- **Rarity:** Common
- **Artist:** David Astruga
- **Total Printings:** 8 across all historical editions

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