Technically, Simba doesnt actually provide any card advantage for you, its a neutral effect
Once we came to that, it meant all of our saga creatures were also going to be enchantments, so obviously the summoners had to care about enchantments in one way or another and different summoners had to do that in different ways. As both saga enchantments and creatures, summons in the Final Fantasy set can act like a normal creature while they remain on the board
On top of that, Jafar has used his Snake staff in many of his cards, and even turned into a Dreadnought Snake form
For me personally, Id probably be in GW mostly on the back of good summons, rares, and Rinoa Heartilly
This system is designed to keep the game from having the common problem of power creep in its competitive forms and provide a chance for new players to the game to enjoy it without feeling the need to purchase all previous sets