Puzzles and dragons

Creation Izanami can replace Hera-Is for the water slot while capitalizing on her light main element. She's also got a one turn 35% or 40% (I don't remember what they buffed it to) shield so it's like a pseudo-delay, in case Echidna's was not enough.

I'd say Izanami is more for the dungeons where you might not have enough time to stall for Hera-Is's gravity or you need that one turn in case you don't have a good board. Besides, firing the three gravities already lowers the boss to 44.8% health, which is overkill when you follow up with 25x. The shield can also come in handy if you can't heal back enough before a pre-emptive attack on the next floor.

I see, so it's more of a defensive line-up. That'll make saving up Wood/Fire/Water orbs more important for when the time is right, but it does seem really safe and minimizes orb trolling.