When the skill playing the cards resolves and the first Battle Card is played, "your opponent may place that Battle Card in their Drop Area instead of playing it. If they don't, they choose 1 of their Battle Cards and place it in its owner's Drop Area" resolves once. This can play out in a few different ways:



1. When the first Battle Card is being played, if your opponent chooses to place the card being played in their Drop Area, the first Battle Card is placed in their Drop Area.

Then...

1-1. When the second Battle Card is being played, if your opponent chooses to place the card in their Drop Area, the second Battle Card is placed in their Drop Area.

1-2. When the second Battle Card is being played, if your opponent chooses not to place the card in their Drop Area, the second Battle Card will be played. Since they don't have any other Battle Cards in play, "if they don't, they choose 1 of their Battle Cards and place it in its owner's Drop Area" will not resolve and none of their Battle Cards will be placed in their Drop Area.



2. When the first Battle Card is being played, if your opponent doesn't choose to place the card in their Drop Area, the first Battle Card will be played. Since they don't have any other Battle Cards in play, "if they don't, they choose 1 of their Battle Cards and place it in its owner's Drop Area" will not resolve and none of their Battle Cards will be placed in their Drop Area.

2-1. When the second Battle Card is being played, if your opponent chooses to place the card in their Drop Area, the second Battle Card is placed in their Drop Area.

2-2. When the second Battle Card is being played, if your opponent doesn't choose to place the card in their Drop Area, "if they don't, they choose 1 of their Battle Cards and place it in its owner's Drop Area" will resolve, and the second Battle Card will be played.