Anyway, his point is right.
Let's assume that "If the next card you play this turn is a minion" is implemented pedantically. This means that, if I play Flash Reincarnation, followed by Natural Selection, followed by a minion, then the minion is not discounted and it does not take damage.
I guess they wanted to emphasize that the effect does not stack, but the formulation is convoluted. Also, it leaves space for the above scenario, which would admittedly be annoying and I don't think devs like to thave in the game.
Can @Ryvirath clarify the point? Thanks!