What I want to see is a few things.

1. It spends 10 of your highest man
2. It restores 400 mana
3. Pot increased slightly
4. Give it 3 charges on a 20 second cooldown.

1. Gives value when using it to fix your mana levels. Like if you have too much of one mana or you want to swap top mana for because you already have a proc on your lower mana.

2. We have mana problems, this would help.

3. The spell should feel good to use and it is currently just weak.

4. This keeps people from just spamming it and allows it to be used when needed for mobility.