The scarlet veto is this seasons first twist
The scarlet veto was first win or I should say found and used by Allison on Big Brother Canada season 2.
The scarlet veto has the power of a regular veto except it can be held onto for an unlimited length of time, on any nominee including the replacement and can be used only during veto ceremonies after the houseguest who won veto that week decides what they will do with it. The original veto holder will still be safe from nomination if it is used.

This power will be given to the houseguest Tengaged chooses In the Secret Power Poll
The houseguests that are nominated may still compete but if they are evicted and get the highest votes the next highest will get the scarlet veto