Crystalline Nautilus
Enchantment Creature — Nautilus
Bestow 
(If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
When this permanent becomes the target of a spell or ability, sacrifice it.
Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it."
- CMC
- 3
- Mana cost
- Color identity
- U
- Rarity
- uncommon
- Set
- Journey into Nyx
- Price
- $0.11
- EDHREC rank
- #27850
Crystalline Nautilus turns any creature into a lightning rod that destroys whatever hits it — stack a six-mana enchantment on your opponent's best threat, and the first removal spell aimed at it takes the enchanted permanent down with it. The cost is real: six mana for a fragile aura that does nothing proactively, so it earns its slot only in dedicated enchantress or political-sabotage builds.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Crystalline Nautilus is legal in Commander, Legacy, Modern, Pioneer, Vintage, and Oathbreaker, but competitive non-rotating formats give it nothing — six mana for a conditional removal deterrent doesn't register when Legacy and Modern have faster, cheaper answers to everything. Commander is where it actually has a conversation: enchantress decks can draw off it, and slapping it on an opponent's commander turns that commander into a ticking political grenade. Oathbreaker could theoretically host it in a slow enchantment-centric shell, but the six-mana ceiling is painful at a 20-life starting total.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.11 bulk tier
At $0.11, Crystalline Nautilus is deep bulk — you're not paying for power, you're paying for postage. That price is stable because demand is narrow, and nothing on the horizon changes that calculus.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.