NFHS Football & Basketball
Dread Our Coming, Suffer Our Presence, Embrace Our Glory (Solonavi War Cry)
1. If I have a knight in a room, can I move my orc into this room?
No. The only enemy things that can move into the room are other Knights and the Cave Troll. Orcs cannot move in there at all.
2. If my opponent has a knight in the same room that I have a Wraith, and I use the Wraith action to push the knight into an adjacent room with an orc in it. Does the knight kill the orc, since he was forced to enter another room?
Yes, the ability triggers whenever a Knight moves into a room with an Orc, regardless of how it moved. (Remember, Knights will even kill Orcs of the same color, though).