How?
Sibling supression/fused suppression fabrials, mixed with advanced cosmere knowledge.
That's like saying removing your oponents air support is meaningless. They have no air support, you do, that is a MASSIVE tactical advantage.
Oathgates can be moved.
"I wish I could do more. You might be able to get him to choose a champion. He is bound by some rules. All of us are. A champion could work well for you, but nothing is certain. And... without the Dawnshards... Well, I have done what I can. It is a terrible, terrible thing to leave you alone." -Honor, The Way of Kings chapter 75.
Note it says Dawnshards plural.
There are several other places where Rosharans refer to Dawnshards. Again note the s.
therefore more than one.
Because they are people, you don't just make new ones like Radiants, they are born, replasing one, takes years.
There are more humans than spren, you only need them to be ready to say the words, and then you can mass produce them.
The Longest Thread - 7
Hurt and Heal - 6
Spoken Camp Games - 4
Rate the ____ Above You - 5
The Game and Its Losers - 5
Guess That Cosmere Character - 7
Synonym Game - 5
Truth or Dare - 5
Tournament: Roast Battles - 5
The Person Below Me... - 8
Guess That Cosmere Place - 8
Nomic - 7
Memes of Any Kind - 5
Hurt TLT heal Game
The Longest Thread - 9
Hurt and Heal - 6
Spoken Camp Games - 4
Rate the ____ Above You - 5
The Game and Its Losers - 4
Guess That Cosmere Character - 7
Synonym Game - 5
Truth or Dare - 5
Tournament: Roast Battles - 5
The Person Below Me... - 8
Guess That Cosmere Place - 8
Nomic - 7
Memes of Any Kind - 4
Hurt TLT heal game