When Nine-Tailed Fox's ability triggers to give attacking 1 might units -1 might (minimum 1), and then Siphon Power gives those same units +1 might, what is their final might value?

Ruling: The units end up with 2 might. Minus might effects "snapshot" at the time of their resolution, so when Nine-Tailed Fox's trigger resolves against 1 might units, it gives them -0 might due to the "minimum of 1 might" condition. The effect doesn't retroactively update when Siphon Power later increases their might.

Sequence:

• Nine-Tailed Fox's trigger resolves first, attempting to give the 1 might units -1 might
• Due to the "minimum of 1 might" clause, the effect snapshots and gives them -0 might (they stay at 1 might)
• Siphon Power then gives them +1 might
• Final result: 2 might units

Nuances:

• The "minimum of 1 might" clause causes the effect to snapshot at resolution time and does not retroactively update if the unit's might changes later in the turn