Fireball can go around walls, including over the top of them, so if the Wall is only 5 feet high, the Fireball will collide with the Wall, and still blast things just on the other side of it.
Can you cast fireball where you can’t see?
No. Fireball does not include the qualifier “That you can see” in its targetting rules. Compare Fireball: A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion of flame.
How many squares does fireball cover?
A 15 foot radius fireball affects 32 squares (a 6×6 area with the corners missing).
Do you need to see for fireball?
Typically, line of sight is sufficient, but strictly speaking you need an unblocked straight path. Common Exceptions/Examples: If a cloud of darkness, fog, or other thing which does not provide cover but which does obscure things in/behind it, the spell can detonate at its target, provided there is no other obstacle.
How does the area of effect of a fireball cast in?
If, as Alexis Wilke states, “the fireball is cast with its center on the ground” than you don’t magically have a 20 foot radius semi-circle of fire beneath the ground because the area beneath the ground is not included in the spell’s AoE due to the text I previously quoted.
How are fireballs constrained by space in RuneScape?
Fireballs constrained by the space just fill the space, et cetera. There’s no “blast” or whatever. It could potentially destroy the container it’s in, but again, RAW, the area of effect of the spell was set when it was cast, there’s no spill-over if the container is breached.
What happens when you cast the fireball spell in 5e?
I think earlier editions had rules where lightning would spread out in an AOE (area of effect), but as far as I know that doesn’t exist in 5e. This isn’t to say fire would spread in a larger AOE under water, but to show that there have been situations where magic is affected by water.
Can a fireball cast outside water create an obstacle?
You could also consider that water could create an obstacle (PHB 204 – for spells that require a clear path to the target). Following that idea – you could theoretically rule that fireball cast outside water explodes when it hits the water surface. (Rather harsh ruling IMHO)
