---
name: "Cloudstone Curio"
mana_cost: "{3}"
cmc: 3
type_line: "Artifact"
colors: []
color_identity: []
keywords: []
set: "RAV"
set_name: "Ravnica: City of Guilds"
collector_number: "257"
rarity: "rare"
artist: "Heather Hudson"
oracle_id: "5cd2fd32-4da2-40eb-b003-c0b9a9ec91c1"
canonical_url: "https://avascry.com/printing/cloudstone-curio-rav"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Cloudstone Curio
- **Mana Cost:** `{3}` (CMC: 3)
- **Type:** Artifact

## Oracle Text
Whenever a nonartifact permanent you control enters, you may return another permanent you control that shares a permanent type with it to its owner's hand.

> *It *wants* to remain a mystery, banishing the curious in favor of less inquisitive company.*

## Top 4096-Dim Neural Synergies
1. [Essence Reliquary](/printing/essence-reliquary-mh3.md) — Artifact
2. [Obelisk of Undoing](/printing/obelisk-of-undoing-atq.md) — Artifact
3. [Crystal Shard](/printing/crystal-shard-plst.md) — Artifact
4. [Scrollshift](/printing/scrollshift-mom.md) — Instant
5. [Hoodwink](/printing/hoodwink-prm.md) — Instant
6. [Ghostly Flicker](/printing/ghostly-flicker-slz.md) — Instant

## Printing Details
- **Set:** Ravnica: City of Guilds (RAV) #257
- **Rarity:** Rare
- **Artist:** Heather Hudson
- **Total Printings:** 38 across all historical editions

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