The wording "A cylinder-shaped spell ignores any obstructions within its area" really is obscure - especially if we take into account that there has to be a line of effect from the spell's origin (which is the cylinder's top circle) to any square within the spell's area in order to affect them.
A burst, cone, cylinder, or emanation spell affects ...
I think this is a poor description, because it is trying to describe a method of drawing a particular volume (by drawing a horizontal two-dimensional shape on the \$XY\$ plane and projecting it downward on the \$Z\$ axis), but then also using that as the description of what the spell itself is doing. The reason that’s a problem is because the combination of ...
Area of effect is centered on an intersection (when on a grid)
The meteors target a point and then explode in a radius - they thus have an area of effect.
When using a tactical map rules variant with area of effect spells, you should select an intersection, not the center of a space.
Choose an intersection of squares or hexes as the point of origin ...
Usually, we interpret spells assuming a “spells do only what they say they do” principle. Since insect plague doesn’t assign any of the appropriate statistics or give any end conditions involving the insects taking damage, we can say that damage from a fireball doesn’t affect the insect. They are magic bugs, after all.
As an example of what such an ...
flaming sphere doesn't specify exactly if the sphere itself is solid.
What we do know:
The sphere is made entirely of fire:
A 5-foot-diameter sphere of fire
You can walk through fire, in real life (though you shouldn't), and in the game. Like create bonfire or just mundane fire.
That would lead to the conclusion that it should be able to be walked ...