Vim, (削除) 13 (削除ここまで) 8 bytes
Saved 5 bytes thanks to @Lynn
(削除) qqi*␛9.o␛q9@q (削除ここまで)
10i*␛Y9p
10i*␛ insert 10 times *, and Y9p copy the line and paste it 9 times.
TuxCrafting
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