The creature with first strike doesnt assign combat damage on both damage steps, only on the first one
This cards highest recorded sale to date took place on eBay for upwards of $60,000 in 2020 (Source)
This is because as the number of players increases, the number of creatures on the battlefield generally increases too
While at this time it would be exes, in the future, this would be whatever the generational gimmick is, e.g.: Lv.X, EX, GX, V, ex (SV) Discontinued/Revised Rarities note: just because there is something here now, doesn't mean it wont come back in the future
Once per turn, if you do not control a "Buster Blader" monster: You can target 1 "Buster Blader" in your GY
The composition of your deck will depend on your desired playstyle and the specific cards you choose to include