---
name: "Prototype X-8"
mana_cost: "{8}{U}{B}"
cmc: 10
type_line: "Legendary Artifact Creature — Robot Octopus"
colors: ["B", "U"]
color_identity: ["B", "U"]
keywords: ["Conjure"]
set: "YEOE"
set_name: "Alchemy: Edge of Eternities"
collector_number: "24"
rarity: "mythic"
artist: "Sergey Glushakov"
oracle_id: "ef04a87f-29bd-4511-948f-e30bbf0d06fe"
canonical_url: "https://avascry.com/printing/prototype-x-8-yeoe"
legalities:
  commander: "not_legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "not_legal"
  vintage: "not_legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Prototype X-8
- **Mana Cost:** `{8}{U}{B}` (CMC: 10)
- **Type:** Legendary Artifact Creature — Robot Octopus
- **Power/Toughness:** 8/8
- **Keywords:** Conjure

## Oracle Text
This spell costs {2} less to cast for each creature card in your graveyard.
Whenever another creature you control enters, if you cast it, sacrifice it. Conjure a duplicate of it onto the battlefield. The duplicate perpetually becomes a Robot artifact in addition to its other types.

## Top 4096-Dim Neural Synergies
1. [Octavia, Living Thesis](/printing/octavia-living-thesis-prm.md) — Legendary Creature — Elemental Octopus
2. [Arcane Proxy](/printing/arcane-proxy-pbro.md) — Artifact Creature — Wizard
3. [Warzone Duplicator](/printing/warzone-duplicator-ybro.md) — Artifact Creature — Construct
4. [Ultron, Artificial Malevolence](/printing/ultron-artificial-malevolence-msh.md) — Legendary Artifact Creature — Robot Villain
5. [Crafty Octopus](/printing/crafty-octopus-ust.md) — Host Creature — Octopus Rigger
6. [Doc Ock, Evil Inventor](/printing/doc-ock-evil-inventor-spe.md) — Legendary Creature — Human Scientist Villain

## Printing Details
- **Set:** Alchemy: Edge of Eternities (YEOE) #24
- **Rarity:** Mythic
- **Artist:** Sergey Glushakov

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