Force of Will 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
You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost. Counter target spell.
Complete guide
Force of Will is a cornerstone of competitive Magic: The Gathering, offering a powerful safety net when you are tapped out. By trading a card and a point of life for immediate interaction, you can stop a game-ending threat before it even resolves. Understanding the nuances of its alternative cost is essential for any blue mage looking to control the flow of the game.
What It Does
At its core, Force of Will is a simple counterspell that targets any spell on the stack. However, its true power lies in its alternative casting cost: you can exile a blue card from your hand and pay 1 life instead of paying five mana. This allows you to interact with your opponent starting from turn zero, even before you have played your first land.
How It Resolves Step by Step
First, you choose the spell you wish to counter. Then, you decide whether to pay the mana cost or the alternative cost. If you choose the alternative cost, you pay 1 life and exile a blue card from your hand simultaneously as you cast the spell. Once on the stack, it has a mana value of 5, regardless of which cost you paid. If it resolves, the target spell is put into its owner's graveyard.
Common Mistakes
A frequent error is assuming that Force of Will's mana value changes when you cast it for free; it always remains 5. Additionally, remember that you must have another blue card in your hand to exile; you cannot exile Force of Will itself to pay for its own alternative cost. Lastly, cost increases, such as from taxes, still apply to the alternative cost, so you may need to pay mana in addition to the life and exiled card.
When to Play It
Force of Will is best saved for high-impact threats that would cause you to lose the game or fall significantly behind. Because it requires you to exile a card, it results in card disadvantage (spending two cards to deal with one). Use it sparingly against spells that can be answered later by other means, and prioritize it when your opponent is attempting to combo off.
Interaction examples
If your opponent casts a spell to destroy your creatures, you can exile Aetherize from your hand and pay 1 life to cast Force of Will for free. Force of Will counters the destruction spell, keeping your board state intact without spending any mana.
If an opponent has cast three spells this turn, they might try to use Mindbreak Trap for its trap cost of {0}. Even though they aren't spending mana, you can still cast Force of Will by exiling a blue card and paying 1 life to counter their Mindbreak Trap, ensuring your original spell resolves.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Force of Will
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as the alternative cost of Force of Will), add any cost increases, then apply any cost reductions. Force of Will's mana value is always 5, no matter what you paid to cast it.
No other card is named in this ruling.
Legal formats
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Meta decks with Force of Will
No archived Top 8 deck with this card yet.



Aetherize
Mindbreak Trap