And finally, in conjunction with Mycosynth Lattice, Karn can deny your opponent all activated abilities for the rest of the game, including mana production
Sure, The Master, Transcendent can only reanimate creatures as 3/3s but that doesnt matter much if your intended targets have powerful abilities like Toxrill, the Corrosive and Consecrated Sphinx
The combination of Wasteland, Daze, and cheap threats can often allow you to end the game before your opponent even gets their feet underneath them, especially if youre on the play
With all three of these in play, tap the Summoning Station to make a pincer
For Narset, one only needs Islands
However, whether it should see play depends heavily on its mana cost and stats (which you didnt specify)