Whisper, Grym Reflection

Grym phantom - Menace (This creature gets
menace if there is a creature with grym phantom in your
graveyard. If this card is in your graveyard, creatures
you control with grym phantom get menace.)
Shadow
If Whisper, Grym Reflection did not attack by
your end step, it returns to it's owner's
battlefield under their control. If it is under it's
owner's control, it goes to target opponent's
battlefield under their control. Either way, it
untaps and gains haste.