In Modern, there are threats that are powerful enough to play despite being caught by common removal, and threats that are powerful because they dodge common removal
Its too good in too many formats, too iconic, and these packs are too expensive for it to suddenly lose $40 to $60 in value.
From my testing, strategies like Eternatus, Leafeon, or Mew can all be beaten if you open with a decent hand and dont brick
The sleeves have sturdy welds so they don't split, and thick PVC plastic means they'll protect your cards from spills or wear and tear over time
And only about half of those are some form of Sephiroth
Something later corrected in the Japanese Super Game Boy v2