LAW 515-001 – Property I
Subject to a Condition Subsequent
An estate subject to a condition subsequent requires the grantor to take some action to reclaim the property.
It relies on a condition happening. Words of condition are like: "but if", "provided that", "on condition that", or "however". The words of limitation will usually be separated from the original conveyance by punctuation, instead attached to the following future interest.
It gives a right of entry as a future interest.