While its signature deck, Future Hands, may not be competitive today, its a key component of many competitive Pokemon decks that consistently perform well
Tomb BladeTomb Blade gives your opponents a choice to sacrifice a creature or lose life for each creature they control
You'll eventually get some random spells for free, but note that casting one of the imprinted spells removes it from exile and returns it to its owner's graveyard when it resolves, so you'll need to tuck away another spell before the Diary triggers again
Now the window has been extended to allow for a three-year cycle, allowing the pool to be much bigger and also means that you and I dont need to buy all new cards so soon
Its Crimson Storm can burn through almost any opposing Pokmon
Also, because it says sacrifice instead of destroy, it can combo with some really fun stuff in Commander - such as when paired with Tergrid, God of Fright, who will then give you control of all of the other sacrificed creatures