The Secret Lair drops themselves are significantly increasing the supply of some of these cards (we have already seen the original printings of some Secret Lair reprints dropping in price, like Marrow-Gnawer), and even if Magic continues to grow, the supply of these reprints is high enough that, at least for most, it's unlikely they will explode in price in the near future
Sounds great
This is particularly wise if youre playing a color like green or red, which often struggle to remove creatures
This Boros commander also works well in aggressive and lifegain-focused decks, where Arabella, Abandoned Dolls attack trigger can turn a board full of small creatures into a significant advantage with cards like Heliod, Sun-Crowned, for example
There are also a lot of good cards that give this effect, such as the mighty Flickerwisp, but only ten can make it into the best flicker cards in MTG
The race will get completely out of control