oaken defender in a sentence

1. Oaken defenders appeared in the " Monster Manual IV ".
2. Oaken defenders live in dryad groves and assist in the defense of such places.
3. The "'Oaken defender "'resembles an enormous ( across ) disk made of dirt, wood, moss and dry leaves, with six vine-like tentacles protruding from the rim at roughly equal intervals.
4. It's difficult to find oaken defender in a sentence.