Myr Quadropod 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
: Switch this creature's power and toughness until end of turn.
Complete guide
Myr Quadropod is a versatile artifact creature that highlights the unique mechanical interactions of power and toughness switching. This Myr allows players to sink mana into its activated ability to adapt its stats for combat or specific synergies. Understanding the layer system is key to mastering this card's potential on the battlefield.
Understanding the Switch
Myr Quadropod has an activated ability that costs three generic mana to switch its power and toughness until the end of the turn. Normally a 1/4, activating this ability turns it into a 4/1. It is important to remember that effects that switch power and toughness are always applied last in the layer system. This means any static buffs, counters, or temporary boosts are calculated first, and the final totals are then swapped.
Resolution and Timing
When you activate the ability, it goes on the stack and can be responded to. Once it resolves, the switch lasts until the cleanup step. If you activate the ability an even number of times in a single turn, the creature effectively returns to its original stats. Be cautious of damage; if a 1/4 Myr Quadropod has 1 damage marked on it and you switch it to a 4/1, that 1 damage becomes lethal and the creature will be destroyed.
Common Mistakes
A frequent error is miscalculating how the switch interacts with outside buffs. If your Myr Quadropod is a 1/4 and you give it +2/+0, it becomes a 3/4. If you then activate the switch, it becomes a 4/3. Players often think it would become a 4/1 and then get the +2/+0 to become a 6/1, but the switch always happens after all other math is finished.
Interaction examples
With four mana available, you cast Myr Quadropod as a 1/4. During your next turn's combat phase, you attack. Before blockers are declared or during the end of the blockers step, you pay three mana to activate its ability. The Myr becomes a 4/1, allowing it to deal significantly more damage to a player or a high-toughness blocker.
You have both creatures on the battlefield. While they don't have a direct mechanical link, they represent a solid artifact-based board state. If an opponent uses an effect that destroys creatures with power 2 or less, your Solemn Simulacrum (2/2) and Myr Quadropod (1/4) are both vulnerable. You can respond by paying three mana to switch the Quadropod's stats to 4/1, potentially saving it from a 'power-based' board wipe, though it would then be susceptible to 'toughness-based' wipes.
If you play Roaming Throne and choose 'Myr', it won't affect Myr Quadropod's activated switch ability because the Throne only doubles triggered abilities. However, if you have a separate effect that triggers when a Myr enters or attacks, the Throne would double that. The Quadropod remains a 1/4 (or 4/1) independently, but serves as a sturdy body that can pivot roles while your Throne provides value to the rest of your Myr engine.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Myr Quadropod
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Effects that switch a creature's power and toughness apply after all other effects, regardless of when those effects began to apply. For instance, if you target a 1/2 creature then give it +2/+0 later in the turn, it's a 2/3 creature, not a 4/1 creature.
No other card is named in this ruling.
- #2· Wizards of the Coast
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a creature may become lethal if you switch its power and toughness during that turn.
No other card is named in this ruling.
- #3· Wizards of the Coast
Switching a creature's power and toughness twice (or any even number of times) effectively returns the creature to the power and toughness it had before any switches.
No other card is named in this ruling.
Legal formats
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Meta decks with Myr Quadropod
No archived Top 8 deck with this card yet.



Solemn Simulacrum
Roaming Throne