If I control both a Stand or Fall and invasion plans, when I attack, do I also choose which of the two piles will block me?
If I control both a Stand or Fall and invasion plans, when I attack, do I also choose which of the two piles will block me?
No. The defending player chooses the pile, you just choose how those creatures block.
Fluttershy is best pony.
let me guess, you want to choose the pile with 0 creatures to block you
you can put 0 creatures in a pile
Yup.
Fluttershy is best pony.
but like if a spell tells you to divide damage you said you cannot assign 0 damage so wehn you divide creatures how come you can divide them into 0 pile?
Because it's not dividing - it's separating. Remember that the piles aren't the cards themselves - the piles are just the things you put the cards into.
Picture the two piles being two boxes. When you separate the cards, you put each card in one of the two boxes. One player then chooses one of the boxes, and all cards in that box get affected by the card in question. You can indeed have one box stay empty.
And if you still don't get it:
700.3d. A pile can contain zero or more objects.
Fluttershy is best pony.
also if there is only one creature blocking and you cannot have a zero pile how are you going to divide into two piles
cut the card in half!!