War's Toll 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
Whenever an opponent taps a land for mana, tap all lands that player controls. If a creature an opponent controls attacks, all creatures that opponent controls attack if able.
Complete guide
War's Toll is a powerful red enchantment designed to force your opponents into 'all-or-nothing' decisions during their turns. By limiting their ability to save resources, it creates a chaotic environment where hesitation is punished. Whether it is mana management or combat commitment, this card ensures your foes cannot hold back.
Dual Restrictions
War's Toll operates on two fronts: economic and martial. First, whenever an opponent taps a land for mana, a triggered ability goes on the stack to tap all other lands they control. Second, if they choose to attack with at least one creature, a static requirement forces every other creature they control to join the assault if they are legally able to do so.
Navigating the Stack
When an opponent taps a land for mana, the ability of War's Toll triggers. Because players can respond to triggers, your opponent can continue to tap their remaining lands for mana before the ability resolves. However, because mana pools empty at the end of every step and phase, they must spend all that mana immediately or lose it, preventing them from saving lands for your turn.
Attacking 'If Able'
The combat restriction only applies if the opponent chooses to declare at least one attacker. If they do, all their creatures must attack. Note that 'if able' is key; creatures with summoning sickness, those that are already tapped, or those affected by effects like Propaganda (where a cost must be paid) are not forced to attack unless the cost is paid or the restriction is removed.
Strategic Implementation
You should play War's Toll when you want to smoke out counterspells or prevent opponents from interacting during your turn. Since they must tap all their lands at once to cast a spell, they will likely be 'tapped out' for the rest of the round. It is also excellent in aggressive decks that want to force blockers into attacking, leaving the opponent's board wide open for a counter-strike.
Interaction examples
If you have War's Toll in play, your opponent is forced to attack with all their creatures if they attack with one. On your following turn, if you attack with a group of Goblins while Shared Animosity is out, your opponent will likely have no untapped creatures left to block, allowing your tribal buffs to deal massive, unblocked damage.
War's Toll forces your opponent to use all their mana in one go. If they try to save mana to activate an ability or cast a spell to stop your Aggravated Assault combo, they will find their lands tapped down prematurely. This pressure ensures that once you begin your additional combat phases, your opponent lacks the flexible mana needed to respond to each new threat.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : War's Toll
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Your opponent can tap lands for mana in response to the triggered ability. The effect won't prevent your opponent from casting spells or activating abilities, but it will make it difficult for that player to cast other spells or activate abilities later in the turn because unspent mana is lost at the end of each step.
No other card is named in this ruling.
Legal formats
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Meta decks with War's Toll
No archived Top 8 deck with this card yet.



Shared Animosity
Aggravated Assault