[Magnetic Refraction and Magneto getting Dazed]

If Magneto played the Magnetic Refraction card during the round but is later dazed does the effect of Magnetic Refraction continue? If not does it still become available to play again in later rounds when playing brotherhood of mutants.

[Cyclops Leadership ability and Dazed Characters]

Can Dazed characters contribute power to a teammate's attack via Cyclops's leadership ability?

[Cover for Characters that are directly overtop one another (from a top down perspective) due to a cave or bridge.]

How does Cover/Line of sight work for characters that are in the same position on the XZ plane? I'm imagining this happening as a result of one character being on top of a bridge or the other character is inside of a cave or tunnel. 

[Orientation of Thrown Terrain]

Is there a way to know how terrain should be oriented when thrown? I know that the terrain should be centered on the straight movement template but it's unclear as to if you get to determine which way to center it. Obviously for things like the Commercial truck this can make a big difference in terms of what the first collision is.