If a unit with 5 might has 3 spell damage already marked on it, can an attacking unit assign only 2 damage to it during a showdown and assign the rest elsewhere?

Ruling: Yes, the attacking unit can assign only 2 damage to the unit that already has 3 spell damage marked on it, since the total damage (2 combat + 3 marked) equals or exceeds the unit's might and is considered lethal.

Sequence:

• Marked damage from spells persists on the unit
• During combat damage assignment, both marked damage and newly assigned combat damage count toward determining if lethal damage has been assigned
• If the total equals or exceeds the unit's might, it is considered lethal and remaining damage can be assigned elsewhere

Nuances:

• The "equal or exceed" wording exists to handle cases where damage would exceed a unit's might (e.g., dealing 10 damage to a 3 might unit) or dealing 0 damage to a 0 might unit