In this deck, Elspeth is valuable, as she's another repeatable source of token generation like Forge
You can always adjust later, and lean into ramp which helps you later by drawing you cards or otherwise helping your strategy
That's all well and good, but if you can hang on to that Metalworker you often end up with eight, ten or even more mana by showing your opponent most or all of your hand
A quick note: were going to skip the Iconics, because, of course, those are the most valuable
[24-047R] Sophia (SOPFFO) C is paid at the point when effects are resolved
If you find yourself adding too many cards, consider scaling back to get that competitive edgeand a better shot at drawing the card you need when you need it.