Does Switcheroo keep the might of the card switched for the turn?

No, Switcheroo does not "keep" the might value in the sense of locking it to a specific number regardless of future changes. Instead, it applies a persistent modifier (an increase to one unit and a decrease to the other) that lasts until the end of the turn.

According to Rule 420.1 and the associated FAQs, "Swapping" is the act of increasing one numeric value and decreasing another so that their values are reversed.

Here is how it works:

• It is a modifier, not a snapshot: When Switcheroo resolves, it calculates the difference between the two units' current Might and applies a +X or -X modifier to them. This modifier persists for the rest of the turn.
• Future changes still apply: Because these are modifiers (increases and decreases), if a unit's Might changes after the swap (e.g., from a new buff, a trigger, or a passive ability), that new change is calculated on top of the modifier applied by Switcheroo.
• Buffs stay put: Physical buffs (like equipment or attached cards) remain on their original units. They are not moved or swapped; only the final Might value is adjusted.

Example: If Unit A has 5 Might and Unit B has 2 Might, Switcheroo applies a -3 modifier to Unit A and a +3 modifier to Unit B. If Unit A later gains +1 Might from another source, its final Might will be 3 (5 - 3 + 1).