Beyond pieces of power, I think Daretti must be in the top 20 cards in the cube, maybe higher
You can move counters onto non-creature permanents only if the movement effect states that you can
According to the lore text at the bottom of the card, the creatures are trapped on a rock (possibly an asteroid.) Someone left behind an encrypted log recording the existence of slivers, either an unlucky explorer or, perhaps, a scientist involved in experimenting with the creatures, which would be a nice callback to the Riptide Project
A special D23 Expo version of the cards are currently being sold to D23 attendees for $49.95
The new card features two attacks
LEFT: essentially the raw card itself, with the Dot Code bars in a consistant shade of border-yellow CENTER: the card with the Dot Code bars exposed in white RIGHT: the Dot Code bars are replaced with specific colors to show the layout of the codes