It's also nice when an equipment card creates a creature and attaches itself to it, so you don't have to spend extra mana to equip it to an existing creature, and you can still play it effectively if your board is empty
it then creates a copy of that card, and if it's a land, Sin gets to copy another card as well
Part of your World and Hades Lord of the Underworld allow you to return characters from your discard pile to your hand
If that creature is legendary, draw a card
Ive personally tested it in Boros Energy, splashing black for Sephiroth and some Thoughtseizes, mainly because of how combo-heavy the current meta is
You can notably use its second ability on Sazh itself, so it can attack as a 5/5 at minimum and potentially even more if you have other ways to place +1/+1 counters on it