Usually you are wanting to hit dorks with your bounce, certainly it vastly reduces the utility of the card having only creatures as potential targets but it doesn't much affect the power
When used alongside a card that lets you reshuffle your graveyard back into your deck, Time Walk can still be quite the strong card, and that means its a highly sought-after one, too
In addition, one of six different Crystal cards is enclosed at random as a display box bonus
Just add some mana rocks and ramp this ahead of schedule, and youll be left with mana while your opponent has nothing
If they never see any new cards, and dont have any answers to your threats on the board, you can effectively stop them from playing the game
On top of that, it also has an anthem-wide firebreathing ability, making it a great follow up to playing all those creatures