The Judas

The Judas wins if he/she dies first
The Judas wins if everyone else dies
A bag of silver - Another player can pay 10 life
If he/she does then the Judas will become
another role type until end of turn
Ability cannot be played until after X
number of rounds were X is 2 rounds times
the number of players in the beginning
Sure you can trust me, what are friends for...