---
name: "Invasion of Karsus // Refraction Elemental"
mana_cost: "N/A"
cmc: 4
type_line: "Battle — Siege // Creature — Elemental"
colors: []
color_identity: ["R"]
keywords: ["Transform", "Ward"]
set: "MOM"
set_name: "March of the Machine"
collector_number: "146"
rarity: "rare"
artist: "Zoltan Boros"
oracle_id: "2d125ef5-074c-44eb-a1d0-c308d48bfbc2"
canonical_url: "https://avascry.com/printing/invasion-of-karsus-refraction-elemental-mom"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Invasion of Karsus // Refraction Elemental
- **Mana Cost:** `N/A` (CMC: 4)
- **Type:** Battle — Siege // Creature — Elemental
- **Keywords:** Transform, Ward

## Oracle Text
(No Oracle text)

## Top 4096-Dim Neural Synergies
1. [Invasion of Ravnica // Guildpact Paragon](/printing/invasion-of-ravnica-guildpact-paragon-pmom.md) — Battle — Siege // Artifact Creature — Construct
2. [Invasion of Kaldheim // Pyre of the World Tree](/printing/invasion-of-kaldheim-pyre-of-the-world-tree-pmom.md) — Battle — Siege // Enchantment
3. [Invasion of Lorwyn // Winnowing Forces](/printing/invasion-of-lorwyn-winnowing-forces-mom.md) — Battle — Siege // Creature — Elf Warrior
4. [Invasion of Shandalar // Leyline Surge](/printing/invasion-of-shandalar-leyline-surge-mom.md) — Battle — Siege // Enchantment
5. [Invasion of Arcavios // Invocation of the Founders](/printing/invasion-of-arcavios-invocation-of-the-founders-mom.md) — Battle — Siege // Enchantment
6. [Invasion of Azgol // Ashen Reaper](/printing/invasion-of-azgol-ashen-reaper-mom.md) — Battle — Siege // Creature — Zombie Elemental

## Printing Details
- **Set:** March of the Machine (MOM) #146
- **Rarity:** Rare
- **Artist:** Zoltan Boros
- **Total Printings:** 9 across all historical editions

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