which, if any, of these can you do during a multiplayer game, when it not your turn, and someone else is already defending.....
1. Discard magic charms off your magician to capture up to 2 humans
2. Discard unknown nation to search your draw pile for a human evil character and add it to battle
3. Negate the "last" good enhancement with unsuccessful
4. capture a hero in battle with unholy writ
5. use covenant of noah to negate an evil enhancement
6. discard gates of hell to add your demon to battle
if people need, i can post card descriptions, but it'll be a really long post