First of all: i totally love your art, Thalas.
Since i saw your Melusine, i loved the polished and dreamy look you give to your drawings!
Back to the card: it's OP with fractal even if it affects both players, since
can always draw.
Immaterial is the most obvious suggestion, but i think it could work because the creatures are little and with low HP.
I would also suggest a different wording. Instead of
Amnesia (Sacrifice card)
Prevents both players from drawing a card from their decks next turn.
i would use
Amnesia:
Sacrifice Jamais Vu to make both players skip a draw.
the reasons for this wording are:
- more similar to Virus|Retrovirus, the other creatures with a "sacrifice: do something" ability
- shorter, so you can eventually add Immaterial or other balancing effects
Another solution could be:
Amnesia:
Rewind Jamais Vu to make both players skip a draw.
This way you skips 2 draws, and you really need to use draw effects to use it effectively.
I don't know if it's too extreme, though. Maybe immaterial is the best solution.