---
name: "Thermal Flux"
mana_cost: "{U}"
cmc: 1
type_line: "Instant"
colors: ["U"]
color_identity: ["U"]
keywords: []
set: "CSP"
set_name: "Coldsnap"
collector_number: "49"
rarity: "common"
artist: "Jeff Miracola"
oracle_id: "90fe98df-4f87-49ff-b562-0ed51d1d3a1c"
canonical_url: "https://avascry.com/printing/thermal-flux-csp"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "not_legal"
---

# Thermal Flux
- **Mana Cost:** `{U}` (CMC: 1)
- **Type:** Instant

## Oracle Text
Choose one —
• Target nonsnow permanent becomes snow until end of turn.
• Target snow permanent isn't snow until end of turn.
Draw a card at the beginning of the next turn's upkeep.

## Top 4096-Dim Neural Synergies
1. [Arcum's Weathervane](/printing/arcums-weathervane-cst.md) — Artifact
2. [Frost Augur](/printing/frost-augur-khm.md) — Snow Creature — Human Wizard
3. [Rimewind Taskmage](/printing/rimewind-taskmage-csp.md) — Creature — Human Wizard
4. [Balduvian Frostwaker](/printing/balduvian-frostwaker-csp.md) — Creature — Human Wizard
5. [Balduvian Conjurer](/printing/balduvian-conjurer-ice.md) — Creature — Human Wizard
6. [Icebind Pillar](/printing/icebind-pillar-khm.md) — Snow Artifact

## Printing Details
- **Set:** Coldsnap (CSP) #49
- **Rarity:** Common
- **Artist:** Jeff Miracola
- **Total Printings:** 8 across all historical editions

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