Magic: The Gathering gave this description for their Final Fantasy cards: MTG x Final Fantasy Summary Cast powerful spells, call upon classic summons, and visit your favorite locations on the back of a chocobo
Nightshroud destroys "Neos Wiseman" with "Darkness Neosphere", and Yubel encourages Jaden to use the effect of "Neos Wiseman" to revive "Neos" by banishing her, and she reassures Jaden that he is not alone
Not the best
You can discard that card, and, if you have seven or more cards in your graveyard, you can transform it into the legendary land, Azcanta, the Sunken Ruin
I also think the synergy with Ring cards might be good enough I'd go out of my way to include them
The only downside is they are slower than youd like, especially Shard of Greed which needs two turns to take effect