Spring-Loaded Sawblades // Bladewheel Chariot is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Flash When this artifact enters, it deals 5 damage to target tapped creature an opponent controls. Craft with artifact(
, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.) Tap two other untapped artifacts you control: This Vehicle becomes an artifact creature until end of turn. Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)
Complete guide
Spring-Loaded Sawblades is a versatile defensive tool from The Lost Caverns of Ixalan that punishes aggressive opponents. Not only does it act as removal on a stick, but it also has the ability to transform into the powerful Bladewheel Chariot later in the game. This double-faced card uses the Craft mechanic to transition from a static artifact into a heavy-hitting Vehicle.
Precision Removal and Crafting
Spring-Loaded Sawblades has Flash, allowing you to cast it during an opponent's turn. When it enters, it deals 5 damage to a target tapped creature an opponent controls, effectively stopping attackers in their tracks. Later, you can pay {3}{W} and exile the Sawblades along with another artifact you control or one from your graveyard to return it to the battlefield transformed as Bladewheel Chariot.
How the Transformation Resolves
Craft is a keyword ability that functions as a sorcery. When you activate it, you exile Spring-Loaded Sawblades and the required materials (one other artifact) simultaneously as a cost. Once the ability resolves, the card returns to the battlefield transformed. If you use a token as the second artifact, it will disappear once it hits exile, so it won't be 'stored' in the same way a card would be, though the craft still successfully completes.
Common Mistakes to Avoid
The most common mistake is attempting to use the Craft ability at instant speed. Even though the front face has Flash, Craft can only be activated as a sorcery during your main phase when the stack is empty. Additionally, remember that the entry trigger only targets tapped creatures; you cannot use it to destroy a creature that hasn't acted yet unless another effect has tapped it.
Piloting the Bladewheel Chariot
Once transformed, Bladewheel Chariot is a Vehicle. You can animate it in two ways: the traditional Crew 1 ability or by tapping two other untapped artifacts you control. This alternative cost is excellent for keeping your creatures available for blocking or attacking while utilizing non-creature artifacts like mana rocks to power your Chariot.
Interaction examples
Your opponent attacks with a 4/4 creature. After attackers are declared, the creature is tapped. You cast Spring-Loaded Sawblades using its Flash ability. It enters the battlefield, its trigger targets the attacking creature, and deals 5 damage, destroying it before the combat damage step.
During your main phase, you pay {3}{W} and exile your Spring-Loaded Sawblades and the Sol Ring you have on the battlefield. The Sawblades returns to the battlefield as Bladewheel Chariot. Even though the Sol Ring is gone, it successfully fueled the Craft cost.
You have Bladewheel Chariot, Sol Ring, and Arcane Signet on the battlefield. Instead of tapping a creature to Crew 1, you tap both the Sol Ring and Arcane Signet to satisfy the Chariot's unique ability. The Chariot becomes an artifact creature until end of turn without you ever needing to tap a creature.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Spring-Loaded Sawblades // Bladewheel Chariot
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
The back faces of some cards with craft refer to cards "used to craft" it. This refers to the cards exiled as part of the cost of the craft ability of the front face. Those cards are considered to be "used to craft" that permanent as long as they remain exiled and the permanent remains on the battlefield, even if the permanent's controller changes or some of its characteristics change (because of a copy effect, for example.)
No other card is named in this ruling.
- #2· Wizards of the Coast
If the materials required include multiple objects, you may exile some of them from among permanents you control and the rest from among cards in your graveyard. You don't have to choose all permanents or all cards from your graveyard.
No other card is named in this ruling.
- #3· Wizards of the Coast
You may exile tokens you control as part of the materials required. However, because they aren't cards and won't stay in exile, any abilities that refer to what you "used to craft" the back faces won't refer to anything.
No other card is named in this ruling.
- #4· Wizards of the Coast
If a card that isn't a transforming double-faced card becomes a copy of a card with craft, it'll stay in exile if you activate the craft ability. It won't return to the battlefield.
No other card is named in this ruling.
Legal formats
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Meta decks with Spring-Loaded Sawblades // Bladewheel Chariot
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Sol Ring
Arcane Signet