If Gearhead (which doubles base Might bonuses from attached Equipment) has Doran's Shield (+1 base Might) attached, and then Svellsongur (which copies the unit's text) is also attached, does the Might bonus double again?

Ruling: No, the bonus does not double again. Gearhead doubles Doran's Shield's base +1 Might to +2. When Svellsongur copies Gearhead's text, this creates two instances of the same doubling effect, but they do not stack to quadruple the bonus—both effects reference the same base value and apply the same doubling rule.

Sequence:

• Doran's Shield attaches to Gearhead with base +1 Might
• Gearhead's ability doubles this to +2 Might
• Svellsongur attaches and copies Gearhead's text
• Both doubling effects look at the base +1 value and apply the same doubling
• Final result: Gearhead has 3 (base) + 2 (doubled Shield) = 5 Might

Nuances:

• Svellsongur itself has +0 base Might, so doubling it contributes nothing
• Equipment attaches to units, not to other Equipment—Svellsongur does not receive bonuses from Doran's Shield
• The copied text on Svellsongur grants its effect to the unit (Gearhead), not to the Equipment itself
• Multiple instances of identical doubling effects do not stack multiplicatively