A blog post from Owl Central Games announcing the cancellation cites "in-depth discussions between our events team, store leadership, and entrenched Legacy players" which came to the conclusion the "greater Legacy community feels that Wizards of the Coast should have banned Grief from Legacy for the health of the format"
I personally like this card, I always thought water and electric Pokemon made good combinations to build a deck around since some water type Pokemon have electric type moves, i.e
2: Put the top two cards of your library into your graveyard, then you may return a creature card from your graveyard to your hand
The only downside is he is uninkable, but you pretty much always want to play him and not ink him, so it's probably fine
Keep your valuable cards in sleeves and toploaders, or in a well-padded binder
When you airbend your own exhaust card, you can cast it again