Invert PolarityHow it works & interactions with other cards

What It Does

Invert Polarity is a modal-like counterspell that relies on chance. When you cast it, you target a spell on the stack. Upon resolution, you flip a coin to determine the spell's fate: winning the flip lets you take control of the spell, while losing the flip results in the spell being countered normally. Because it either counters or steals the target, the original spell will not resolve as your opponent intended regardless of the flip's outcome.

Step-by-Step Resolution

First, you cast Invert Polarity and choose a target spell. When Invert Polarity resolves, you immediately flip a coin. If you win, you gain control of the spell and may choose new targets; you must choose these new targets immediately before the current spell finishes resolving. If you lose, the spell is simply countered and moved to its owner's graveyard. Note that if the spell is stolen, you become the controller, but the original owner remains the owner.

Common Mistakes

A frequent error is trying to change the number of targets or the distribution of effects. If you win the flip and gain control of a spell that distributes damage or counters, you can change who receives those effects, but you cannot change the amounts assigned. For example, if a spell was cast to deal 3 damage to one target and 1 damage to another, you can pick two new targets, but they will still receive 3 and 1 damage respectively.

When to Play It

Invert Polarity is best used against high-impact spells where both outcomes are beneficial. It is especially potent against powerful removal or game-ending permanents. Since it costs three mana with specific color requirements, it is a mid-to-late game tool used to protect your board state or swing the tempo of the match by turning an opponent's resource against them.

Interaction examples

Stealing a Warp

Chaos Warp

Your opponent casts Chaos Warp targeting your commander. You cast Invert Polarity targeting Chaos Warp. You win the coin flip. You now control Chaos Warp and choose to change the target to your opponent's best creature. Chaos Warp resolves: your opponent shuffles their creature away and reveals the top card of their library, while your commander stays safe.

A Standard Counter

Counterspell

You cast a large creature, and your opponent casts Counterspell to stop it. You cast Invert Polarity targeting Counterspell. You lose the coin flip. Invert Polarity counters the Counterspell. Because the Counterspell is countered, it never resolves, and your creature successfully enters the battlefield. In this case, losing the flip still achieved your primary goal.