14. If you are in 2nd, challenge first place to a countdown duel. If there is less than 10 minutes to go make a deal that whoever wins takes 1st place. This is the honorable route (Standards non-wb).
15. If your opponent leads with certain cards, counting the commander,. Surrender immediately. You would lose bad.
-15a. Unless you have such combo too or you’re confident you got a counter out.
-15b. If you don’t know those combos, ask around.