Just a reminder, no limit to the number of challenges, but first wrong challenge, 2 minutes, delay of game. After that, 4 minutes.
ETA:
EXPANSION OF COACH'S CHALLENGE
NEW CATEGORY: In addition to Coach's Challenge for "Off-side" and "Interference on the Goalkeeper", a third category will allow for the Coach's Challenge of goal calls on the ice that follow plays in the Offensive Zone that should have resulted in a play stoppage, but did not.
This change will allow Challenges of plays that may involve pucks that hit the spectator netting, pucks that are high-sticked to a teammate in the offensive zone, pucks that have gone out of play but are subsequently touched in the offensive zone and hand passes that precede without a play stoppage and ultimately conclude in the scoring of a goal. Plays that entail "discretionary stoppages" (e.g. penalty calls) will not be subject to a Coach's Challenge.
Coach's Challenges for these types of plays (and for "Off-Side" Challenges) will only be available if the puck does not come out of the attacking zone between the time of the "missed" infraction and the time the goal is scored.
PENALTIES FOR UNSUCCESSFUL CHALLENGES: The number of Coach's Challenges that can be made will no longer be limited based on the availability of a team's time-out. Teams will be permitted to exercise a Coach's Challenge at any time, but with escalating "consequences" for unsuccessful Challenges. The consequences of unsuccessful Coach's Challenges will be made consistent across all three Categories of Coach's Challenges: (1) minor penalty for Delaying the Game on a Club's first unsuccessful Coach's Challenge; and (2) double minor penalty for Delaying the Game for each additional Coach's Challenge that is unsuccessful.
The Situation Room in Toronto will continue to be responsible for initiating video review in the final minute of regulation time and overtime as well as continue to have final authority over all Coach's Challenge video review decisions with input and consultation from both the On-Ice Officials and a former Official staffed in the Situation Room.