Talk:Direct Dynamic Diamond Overhead!!/@comment-26021817-20180129020858/@comment-27282915-20180129022255

I believe Q1612 from the Japanese Q&A answers your question. (Thunder Lance X Tempest Buster! may not be the exact card, but the same issue is addressed.)

Here's the raw Google Translation:

As for your second question, you will not be able to use or cast a Counter since you are already using a card - casting an impact. (See "2. Flow of a Play Timing/[Counter]" from the Detailed Rules for greater detail.)