I think that for the earth splinter, the soulbound cards are maybe not that useful but I have to admit that I didn't use them much yet because they aren't developped enough to play in Diamond. I love Fungus Flinger with the Martyr ability :-). Nice post!
I have picked this post on behalf of the @OurPick project and it will be highlighted in the next post! 
Wow! Very thanks!
I also played Fungus Flinger a lot in battles but my recent favorite was Terraceous Hulk together with Immortalis on a reverse speed match as a better choice to Mycelic Slipspawn cause it has slow on diamond league.
btw, thanks for coming by my post and good luck with the eos chest! 😁