Crossword puzzle clue "one who can be patched together from the letters added to the theme answers"

One who can be patched together from the letters added to the theme answers

Witch, and the combination of letters added to this puzzle's theme answers

Patched together

Gift of the Magi, added phonetically to the theme answers

Powerful political gp., or, read another way, an illustration of what's added in front of this puzzle's theme answers

Supplements added to each of this puzzle's theme answers

Apt word spelled out by the letters added to 10 answers in this puzzle

English county (it can be added to the ends of this puzzle's seven longest answers)