Not sure why you posted in this thread, but given how low level your 5* heroes are, I’m guessing you don’t have a max level base yet, and your willingness to sink money on an elemental pull of all things means you’re fairly new to the game.
Here’s the thing: 5* heroes cost a RIDICULOUS amount of feeder heroes and food to reach max level, let alone the materials for it. It’s like buying a Ferrari when you don’t have the track to race it on and can’t afford the insurance.
You have great heroes already, but you need a solid base to build them up. Focus on 3* and 4* heroes for now and build up the 5* as kind of a fun side project when the time comes.
I know it’s tempting to think otherwise, but you are not ready young Skywalker. Get your Banes and Beliths and Valens up first, then Grimms and Boldtusks and Scarletts, and your farms a growing and your stronghold tall. Only then will you be ready.