I don't see how Priest could replace some other of our threats as he just ain't one... you are just getting a 2/1 for no cost basically, that's it. FAIL
Regarding Metamorph, I wouldn't consider him for MD as he doesn't fit the scheme of DS of disrupting and attacking with bomby creatures. He just acts in response to our opponent, also having him in MD against say Merfolk, Goblin and decks with less creature count is like 'okey, I've got this. Now what?'
The reasons above are also valid for Revoker, acting in response when many times you don't have something in order to respond to ain't my best deck choice...
This other card, the 3/1 first strike doesn't solve many of our problems and isn't a bomby. Also, difficult to find him a space when having many far better creatures to choose.
On the other hand, the ONE card I'd consider is the new Dragon. A great balance between stability and attack
As where I see it, DS works better with no 5cc cards. I've been stuck many times becouse of that fact and hasn't worked for me. Basically, the biggest problem I see in DS is it's lack of stability so cutting 5cc cards solves a great deal of this, also does removing swords for ratchet bomb. We already have big creatures than win on their own, swords for me is win-more. But ratchets make the deck more stable and can also clean the board from threats we cannot deal in any other way.
So my list would be like this:
// Creatures 23
4 Gathan Raiders
4 Magus of the Moon
4 Rakdos Pit Dragon
4 Simian Spirit Guide
4 Lord of Shatterskull Pass
2 Moltensteel Dragon
// Spells 18
2 Blood Moon
4 Chalice of the Void
4 Chrome Mox
3 Trinisphere
3 Ratchet Bomb
3 Seething Song
// Lands 19
4 Ancient Tomb
4 City of Traitors
11 Mountain
In my meta there are many merfolk and goblins... I've also been playing with Flametongue Kavu with great results, but now I've cut them to make room for the new dragons

