TYPE
Enchantment Creature — Nautilus

ABILITY
Bestow {3}{U}{U} (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 to a creature.) When Crystalline Nautilus 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."

POWER/TOUGHNESS
4/4

ILLUSTRATOR
Brad Rigney

LEGALITIES
Standard Future Historic Timeless Gladiator Pioneer Explorer Modern Legacy Pauper Vintage Penny Commander Oathbreaker Standardbrawl Brawl Alchemy Paupercommander Duel Oldschool Premodern Predh

LANGUAGES
EN FR DE IT JP KR PT RU ES ZH-CN ZH-TW

RULINGS

• 2014-04-26 An Aura that becomes a creature is no longer put into its owner's graveyard as a state-based action. Rather, it becomes unattached and remains on the battlefield as long as it's a creature. While it's a creature, it can't be attached to another permanent or player. An Aura that's not attached to a legal permanent or player as defined by its enchant ability and also isn't a creature will be put into its owner's graveyard as a state-based action.
• 2014-04-26 If a permanent with bestow enters the battlefield by any method other than being cast, it will be an enchantment creature. You can't choose to pay the bestow cost and have it become an Aura.
• 2014-04-26 Unlike other Aura spells, an Aura spell with bestow isn't countered if its target is illegal as it begins to resolve. Rather, the effect making it an Aura spell ends, it loses enchant creature, it returns to being an enchantment creature spell, and it resolves and enters the battlefield as an enchantment creature.
• 2014-04-26 Auras attached to a creature don't become tapped when the creature becomes tapped. Except in some rare cases, an Aura with bestow remains untapped when it becomes unattached and becomes a creature.
• 2014-04-26 On the stack, a spell with bestow is either a creature spell or an Aura spell. It's never both, although it's an enchantment spell in either case.
• 2014-04-26 Crystalline Nautilus's middle ability functions as long as Crystalline Nautilus is on the battlefield, whether it's a creature or an Aura.
• 2014-04-26 Unlike other Auras, an Aura with bestow isn't put into its owner's graveyard if it becomes unattached. Rather, the effect making it an Aura ends, it loses enchant creature, and it remains on the battlefield as an enchantment creature. It can attack (and its {T} abilities can be activated, if it has any) on the turn it becomes unattached if it's been under your control continuously, even as an Aura, since your most recent turn began.
• 2014-04-26 Similarly, if you cast an Aura spell with bestow targeting a creature controlled by another player, and that creature is an illegal target when the spell tries to resolve, it will finish resolving as an enchantment creature spell. It will enter the battlefield under your control.
• 2014-04-26 If the enchanted creature leaves the battlefield, the Aura stops being an Aura and remains on the battlefield. Control of that permanent doesn't change; you'll control the resulting enchantment creature.
• 2014-04-26 You still control the Aura, even if it's enchanting a creature controlled by another player.