I looked at the various options, convinced there was something already there, but it doesn't look like it. This sounds like an easy and useful layout token. I'll make it happen for the final version of 3.4.
I'm thinking something like:
<timeUntil round="4">
<timeUntil break="3" end="true">
<timeUntil level="5">
And any other variations I can think of. Plus attributes you'll find in similar tokens, like format and showSeconds, etc. (See <rebuyTimeLeft> for example.)