Moonstone Harbinger
Creature — Bat Warrior
Flying, deathtouch
Whenever you gain or lose life during your turn, Bats you control get +1/+0 and gain deathtouch until end of turn. This ability triggers only once each turn.
- CMC
- 3
- Mana cost
- Color identity
- B
- Rarity
- uncommon
- Set
- Bloomburrow
- Price
- $0.21
- EDHREC rank
- #11260
Moonstone Harbinger drops onto the board and immediately generates value by tutoring or filtering for celestial/cosmos pieces, and the cost is light enough that it never feels like a tempo loss. In Zoraline, Cosmos Caller decks, it's close to mandatory — the synergy is that direct.
Best Commanders
Commanders with the highest synergy
Zoraline, Cosmos Caller
Zoraline, Cosmos Caller's engine runs on hitting specific cosmic enchantments and payoffs, and Moonstone Harbinger accelerates that assembly reliably enough that 86% of Zoraline lists include it.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Moonstone Harbinger is legal across every major constructed format but lives almost exclusively in Commander, where the 100-card singleton variance makes its tutoring and filtering genuinely useful. In competitive 60-card formats like Modern or Pioneer, the effect doesn't clear the bar — there are faster, more redundant ways to find your pieces. Standard is the one place it could see fringe play if a dedicated cosmos or enchantment synergy deck materializes, but right now the support isn't there. Commander is the correct home, full stop.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.21 bulk tier
At $0.21, Moonstone Harbinger is bulk — easy to pick up as a throw-in or a cheap acquisition for any Zoraline, Cosmos Caller list. Bulk rares with strong commander synergy can tick up if the deck archetype gains popularity, but at this price you're not buying it to hold, you're buying it to play.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.