Though I suppose it's DM discretion on if the damage would be "direct" or "indirect" -- because the wall was placed in the air, then fell, it's not like the wall took a swing at a character.
I would also say that yes, you need to maintain concentration, because the spell is ongoing -- if the spell ends the silent image is no longer there. Though I can see this ruled the other way, as the object becomes real for 1 minute -- I'd say here, it's DM discretion.
In the text of Illusory Reality, the final sentence reads as "The object can't deal damage or otherwise directly harm anyone"
So because of that, I would think the wall falls, but if it hits anyone below it, maybe it just breaks and does no damage?
How do you get a one-armed goblin out of a tree?
Wave!
Though I suppose it's DM discretion on if the damage would be "direct" or "indirect" -- because the wall was placed in the air, then fell, it's not like the wall took a swing at a character.
I would also say that yes, you need to maintain concentration, because the spell is ongoing -- if the spell ends the silent image is no longer there. Though I can see this ruled the other way, as the object becomes real for 1 minute -- I'd say here, it's DM discretion.
How do you get a one-armed goblin out of a tree?
Wave!
The Illusory Reality says that is can't harm anyone. I would say that the spell fails, as soon as it is going to damage someone or something.
And Yes, you need to maintain concentration.