Can a player attack a battlefield with units from base in multiple waves, and how does damage assignment work during showdowns?

Ruling: Yes, a player can move units from base to attack a battlefield in multiple waves, but if using standard movement (not spell-based), they must wait for the current combat to end before moving additional units. During showdowns, each player sums the might of all their units and independently decides how to distribute that total damage among the opponent's units.

Sequence:

• First wave of units moves to battlefield and initiates showdown
• Combat resolves (cards traded, damage assigned)
• After combat ends, additional units can move from base to the battlefield
• New combat begins if applicable

Nuances:

• Damage is not dealt unit-to-unit; each player totals their might and distributes it as they choose
• Both players assign damage simultaneously and independently (attacker doesn't control both sides)
• Units cannot be forced to tank damage first unless they have the TANK status
• In practice, the winning side often just kills all opposing units, making assignment choices less relevant