Ultimate accelerant

Better idea:

Hold E to use the ult. acc. without a need to pick it up. Would help with the annoying "drop item  -pick up ult acc - use - wait - pick up item again" lifeline gameplay if your inventory is full.

If you have an ult. acc. in inventory, use your ultimate key to use an ult. acc when your ultimate is on cooldown.

That way no addional stuff in the health wheel and the binding makes sense.