Some challenging cards you request there. I like it
I had to add a buyback implementation and added
Capsize and
Whispers of the Muse.
Forbid has discarding cards as a cost which isn't supported at the moment and looks like quite some work to implement. I want to add other costs than mana eventually though.
Silver Wyvern : changing targets is something I have looked at once and at the time I didn't see a proper way to do it. I'll look into this.
Tradewind Rider : has two targets which we don't want at the moment because of AI speed.
Impulse : it doesn't look that hard to show those four cards but I seriously doubt how the AI would handle ordering the 3 cards that get put on the bottom of the library. So, doable but a lot of work. Don't expect to see this in 1.19 unless I have some eureka moment lol.
I added the other cards I didn't mention above.
Any chance of adding the "Storm" mechanic?
I haven't looked at the specifics but keeping track of the number of spells played should be possible. I too wonder how the AI would handle it. Certainly something I'm willing to try to implement. 1.20 it will be though