Hammer Overflow

Got a Hammer of Heroes from a legendary chest. Happy days right?

But I already have a hammer in storage from the CWL medals. Have to use one of the hammers within 24 hours.

The trouble is, 5/6 of my heroes are already maxed, and the Duke already has an upgrade in progress with 4 days left. I also have a pet upgrade in progress with 3 days left on the clock.

What even do I do?! 🥲🥲🥲