The High Court has the power to make decisions on things it could decide on when the Senior Courts Act 2016 started. You can think of this as the court being able to do what it was already doing. The High Court also has the power to make decisions that are needed to follow New Zealand's laws. The High Court gets its power from the Senior Courts Act 2016 and other laws. This means the court can do what it is allowed to do under these laws. The court's power also includes things it could do under laws made before the Senior Courts Act 2016, like the one mentioned in the law from 1986. The High Court's power is made up of what it had before, what it needs to follow New Zealand's laws, and what other laws say it can do. This gives the court a lot of responsibility to make important decisions. You can find more information about the court's power in the laws that govern New Zealand.