How does this card work? I think this card is at least one sentence short of being clear. I am unable to find an answer to this online.BLACKMAIL
Description: You have the goods on one of the opposing players, and you have chosen
now to call in your favor..
Timing: Play at the beginning of your turn, before any player takes an action.
Effect: You may treat a chosen opposing player as a member of your team instead of this
turn only. Note that the referee recognizes the player as an opponent, so you may not
score a touchdown for your team with this player.
Will my players tackle the blackmailed teammate? How does assists work? Will the blackmailed player cause a turnover for the team using the card against me if they fail at something important?