Each character begins with a set amount of HP at the beginning of the fall, injuries sustained fighting Thread cause this number to go down. If it reaches zero, the character dies. If they survive, all HP is refilled at the end of the Fall. Each time a dragon successfully destroys a piece of Thread, they win a point. 'hits' can occur for particularly large clumps destroyed, which earn more points than normal. This is, again, randomly determined. Threads which injure or even kill a rider still earn the owner points.
I use an online dice roller (Actually I'm using random.org now) and a chart with hits, misses, and injuries to decide outcomes.
Each color of dragon has different abilities in battle against Thread.
Golds 10 HP: Only roll three times--no modifiers
Bronzes 15 HP: Roll 7 times--no modifiers
Browns 10 HP: Roll 5 times--for each success, 25 % chance +1 point
Blues 10 HP: Roll 5 times--50% chance of rerolling a miss.Greens 8 HP: Roll 3 times--for each success, flip a 'coin'. Extra points are doubled for each 'heads'.
1. People will die in Threadfall. Deal with it. There's nothing keeping you from getting as many dragons as you want. Enough points will eventually allow you to redeem items belonging to a deceased rider for a fraction of the original price and even allow you to bring a dead rider back to life.
2. Dragons don't /have/ to fight Thread and, therefore, possibly die, but they won't be able to earn any points.
3. All dragons can participate in Threadfall. Golds don't get many chances to destroy Thread, but they're less likely to die as a result. The other colors fight Thread directly, earning more points, and have a higher chance of being injured and killed.
5. There's an overall limit of 15 adult dragons who can participate in a single Threadfall round, though it may be run with less than that. Weyrlings are also limited to a total of 15. Dragons are accepted on a first-come, first-serve basis. There are no other limits, though eventually, there will probably be a limit on dragons per person.
6. A single dragon cannot be entered in more than one Threadfall round at a time. If s/he's already signed up for round 6 and round 7 opens before that one's been flown, that dragon will have to wait until round 6 has finished, if there are any spots left open by then. This includes Weyrlings.
7. Your characters can only die if you have two or more adult dragons.
8. Weyrlings are allowed to participate in Threadfall, by supplying the adult dragons with extra firestone. Weyrlings are less likely to get hit, but when they are scored, they tend to have more serious injuries than the experienced riders. They'll have two chances to earn points--of course, they could always miss, in which case, they're out of luck. :P Weyrlings cannot use any items they may have attached.
9. There is not going to be a Pass-Interval system, simply because it would take too long, however...The dragons will not last forever--once they've reached their 30th Cycle (Which is 60 years old, in character!), the threadfalls will become more dangerous for them, and if they reach 35 Cycles (70 years old) they will be forcibly retired from threadfall (or clutching, if it's a gold). Once retired, the Forgery Tools can be used to redeem their items as if they had died, but they cannot be brought back with the Between Rescue. Honestly, getting a dragon through to retirement takes about two years of real time, so you don't have to worry about losing your dragons anytime soon. Think of it as the pair dying of old age after a long and fulfilling life. :)
Wings are organized into three different levels: Level 1 is the highest, it's easier to score points, but you may take more damage. Level 2 is the mid-level, it's pretty much average. Level 3 is the lowest, there is less thread, so there'll fewer points and fewer injuries. (Both of which will manifest as a higher number of misses rather than a different number of rolls.) Any rider can fly on any level.
Which Wing Level will they fly in? (1 high, 2 middle, 3 low)
Do they have any items/equipment to be used this round?