Talk:Phoenix Wall/@comment-33468092-20180122120618/@comment-24971427-20180122121915

Yes, you can use this against any source of damage.

There is no once per turn limit, so cast any amount you like.

However, say an impact deals 4 damage. And you have 2 of these in your hand. You can only cast one of them in response, you can't cast multiple spells at the same time.

Also, if the damage says it can't be reduced, this card has no effect.