Core Set 2019 was released on July 13, 2018 and contained 280 cards (plus 34 additional non-booster cards). It was the first core set after three years without standard legal reprint sets, following Magic Origins. The abolishment of core sets led to difficulties in reprinting cards not matching the flavor of current expansions. Naturalize itself is a prominent example: It didn't see any reprints in 2016 and 2017, the core set-less years.

USA, Belgium and Japan produced cards can be told apart by the designs of the horizontal line (probably since Dominaria). There are differences in thickness and a serrated vs. smooth bottom edge (see here).