Hmmm~ I wonder what will happen if someone manage to Fractal these critters (particularly LMF) and get more than eight of these in a single field, the difficulty of balancing Fractal into a Time/Darkness notwithstanding.
At that point, players would basically have to use all of their cards each turn or else they would discard one per turn till their hand was empty.
For most decks that turns into: you must use the card you draw each turn or discard it.
This could be simply a bothersome annoyance for some strategy (e.g. spam your hand type decks) or it could be crippling (otk type decks).
I can think of a lot of ways to use this card... GoTP mare is probably the most in danger of abuse, but eternity / rewind based decks could also benefit, since it interferes with the typical counter strategy of hoarding up creatures and then spamming them all in one turn.