Contractual Safeguard 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
Addendum — If you cast this spell during your main phase, put a shield counter on a creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.) Choose a kind of counter on a creature you control. Put a counter of that kind on each other creature you control.
Complete guide
Contractual Safeguard is a powerful white instant that allows you to proliferate specific protections across your entire board. Whether you are spreading keyword counters or defensive shields, this card ensures your army stays unified and resilient. Timing is everything with this spell, as its Addendum bonus can significantly change the outcome of your turn.
What It Does
The primary function of Contractual Safeguard is to replicate a type of counter from one creature you control onto every other creature you control. If you cast it during your main phase, the Addendum ability triggers first, placing a shield counter on a creature. Then, you choose any type of counter currently on a creature you control—including the shield counter you might have just placed—and give that same type of counter to all your other creatures.
How It Resolves Step by Step
First, the game checks when the spell was cast; if it was your main phase, you choose a creature and put a shield counter on it. Second, you choose a 'kind' of counter present on any creature you control. You don't target the counter or the creature it is on. Finally, for every other creature you control that doesn't have the chosen counter, you place one of that kind on it. Note that if you control no creatures with counters when this part resolves, nothing happens.
Shield Counter Mechanics
Shield counters provide a one-time replacement effect for destruction or damage. If a creature with a shield counter would be destroyed or dealt damage, you remove the counter instead. Importantly, shield counters do not prevent sacrifice, and they still get removed even if the damage dealt is 'unpreventable.' Unlike keyword counters, 'Shield' is not an ability, so losing all abilities won't stop the counter from working.
When to Play It
To maximize value, cast this during your main phase to generate a shield counter for free, then select 'shield' as your counter type to protect your entire board. However, it can be used at instant speed during combat to surprise an opponent by spreading +1/+1 or flying counters. Just remember that you only get the bonus shield counter if it is your main phase.
Interaction examples
Suppose an opponent casts Generous Gift targeting your commander. In response, you cast Contractual Safeguard during your main phase. Addendum places a shield counter on your commander. You then choose 'shield' for the second part of the spell, giving every other creature you control a shield counter. When Generous Gift resolves, your commander stays on the battlefield, and only the shield counter is removed.
If you cast Teferi's Protection, all your permanents phase out and are treated as if they don't exist. If you then cast Contractual Safeguard, you will find you have no creatures to choose a counter from. To combine these, you must cast Contractual Safeguard first to establish your counters, and then use Teferi's Protection to protect your life total and board state from further interaction until your next turn.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Contractual Safeguard
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If you cast this spell during your main phase, you may choose the shield counter for the second part of the spell.
No other card is named in this ruling.
- #2· Wizards of the Coast
Shield counters don't prevent players from sacrificing creatures.
No other card is named in this ruling.
- #3· Wizards of the Coast
Removing a shield counter in this way isn't the same as regenerating a creature.
No other card is named in this ruling.
- #4· Wizards of the Coast
If a permanent that would be dealt damage has more than one shield counter on it, that damage is prevented and only one shield counter is removed.
No other card is named in this ruling.
- #5· Wizards of the Coast
If a permanent with a shield counter is dealt unpreventable damage, that damage will be dealt and a shield counter will still be removed.
No other card is named in this ruling.
- #6· Wizards of the Coast
A creature with a shield counter on it may still be destroyed by state-based actions if it has damage marked on it equal to its toughness or has been dealt unpreventable damage by a source with deathtouch.
No other card is named in this ruling.
- #7· Wizards of the Coast
“Shield” is not an ability that creatures have and shield counters are not keyword counters. If a creature with a shield counter loses its abilities, the shield counter will still protect it as normal.
No other card is named in this ruling.
Legal formats
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Meta decks with Contractual Safeguard
No archived Top 8 deck with this card yet.



Generous Gift
Teferi's Protection