Frozen slots only work with jellyfish that you have to win. When that happens, they stop aging, and the only way to remove them is to chase or kill them if I'm correct.

What if there was another way to use some of these slots?

Sometimes we get a cub that we don't want immortalized forever. Sometimes we get a little male cub we want as an heir, but maybe our king isn't old enough to be retired for free and we don't have enough for the fee. What if we could use any frozen slots (or maybe even a different kind of frozen slot) to keep lions from aging until we unfroze them? More ideas can be added to this, but this is only a suggestion.