I think that the wind behind the sails has left, but it still has some momentum left. Don't count it out for BR's, but I don't think it will make a big enough impression on Nats.
Magmortar is just being replaced for better sinergized decks, like empoleon, eevelutions, etc.
Ithink it will see play at nats though... but will not be the most used. let it go, it had its time of glory.
Empoleon/Glaceon (#5) MD's first attack not good?!
Read Holon Energy FF before your ask questions.
Skittles is rarely played. Ho-oh is an easy KO for Empoleon/Glaceon/Gyarados. (And yes, I know about its Power. Even then, it only has a 25% chance of surving 2 turns of combat.)
Togekiss can even potenially get OHKO by Gyarados.
Magmotar is not dead but dying. Eeveelution is a hard deck to face even if you don't play Magmortar. Just the other day I encountered a Leafeon/Sceptile deck, and believe me, it was a wicked one. But Mags is definitely dying, and Gyarados is rising.......
Empoleon wrecks it. And its not just weakness. Being able to snipe the bench foils Mags ability to hide behind starters then activate Scramble and sweep.