They come pre-stacked in the most widely known memorized stack, which is awesome (sadly, I learned a different one...but I'm learning this one as fast as I can)
Also we probably have too many Mountains given that 73% of your mana costs are blue
The effect is worth the trade-off, however, since you can just chuck those counters on Zombie tokens you don't care about to get Plague Belcher on the battlefield
Since Masters 25 boxes are smaller than normal (with only 24 packs rather than the more common 36), all of the bulk commons and uncommons don't actually add all that much value to the EVabout $1.60
After ruling Eldraine for 18 years, the villainous Oko sent him on a Stag night hed never forget, instigating much of that sets storyline
Drop it with mana to spare and flipping the board advantage