I see Sinkhole Surveyor as a beater that can get out of cheap removal range fast, and with some Bloomburrow bats around, the life loss is somewhat relevant
So if I land, say, a Stonecoil Serpent for X=5, I get to draw five cards right away
New, unopened
I wavered on whether Pantlaza, Sun-Favored from The Lost Caverns of Ixalan Commander bonus sheet should be the number one Dinosaur card for Commander
Both the face commander Dina and the old Dina, Soul Steeper care about lifegain and sacrificing creatures, and Beledros Witherbloom herself helps to contribute to that theme really well, not to mention payoffs like Veinwitch Coven and Blight Mound (both reprints from the OG Strixhaven precons)
I loved playing the Gwent beta, but never found the time or gave the game the priority needed to properly learn the game