1. Ok, I ran into an odd situation the other day. My friend attacks me with a character who has both Wildling Mead and Seafarer's Bow attached. After I declare defenders, he uses Wildling Mead to stand his character and then kneels the character and Seafarer's Bow to add 4 STR to himself. This seems a bit odd to me but I can't think of any reason why it shouldn't work. Is there any rule against standing characters who are currently participating in a challenge like this?
2. Also, my friend has Blood of the Dragon (gives +6 STR while attached character is "participating in a challenge" ) attached to the Khal Drogo who kills people with lower STR than him. Can Khal Drogo effectively kill anyone on the board or does the "participating in a challenge" limitation mess this combo up?