Invisible Eye Worm

Each opponent that has drawn a card or done
anything with their library other than drawing
a card discards a card at random then shuffles
their library.
If no opponents have, then target opponent
reveals their hand. You choose a noncreature,
nonland card from it. That player discards that
card.
"These little parasites are invisible to anyone infected.
It will be a useful ability to when I work out how they do
it. Until then, spreading them helps." - Ashyn Geist Stitcher