rishadan port

How effective is Rishadan port really? Does its effect have a significant impact on the game?

Is it worth playing if you dont play an all in taxing strategy?

When playing with it, do you find its a good idea to port your opponent only when you have extra mana or port them actively?

When playing against it, do you find that it really hinders you from progressing or advancing the board state? Has it ever caused you to lose the game?

With many tempo decks being able to run off 1-2 mana opponents can still get threats down early an seemingly overcome port with t1 pressure. Thanks delver / drs

Also id be interested to know if your experience comes from playing with it or against it.


****Note - please do not discuss price