This is one of the riddles from Wilhelm Binder's Flores Aenigmatum Latinorum (1857).
Aenigma: Quid Sum?
Omnia consumo, foveo simul omnia; rerum
Causa fui, rerum mox quoque finis ero.
The vocabulary is keyed to the DCC Latin Vocabulary list. There are only two words in this poem that are not on the DCC list:
aenigma (aenigmatis, n.): riddle, enigma
foveō, fovēre: keep warm, foster, favor
causa -ae f.: cause, reason
cōnsūmō -sūmere -sūmpsī -sūmptum: to use up, consume
fīnis -is m.: end, boundary
īgnis -is m.: fire
mox: soon
omnis -e: all, every, as a whole
quoque: also, too
rēs reī f.: thing (rēs pūblica, commonwealth; rēs familiāris, family property, estate; rēs mīlitāris, art of war; rēs novae, revolution)
simul: at the same time
sum, esse, fuī: be, exist
