Octowall

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How to Make the Trick:
Hevesh5 made a great tutorial on this.

Starting the Trick:
It is possible to have a bigger domino knock down a part of the wall, but to get the best effect, you can pull a string taped to a domino, as said in Hevesh5's video.

Ending the Trick:
There are many ways to continue the trick, but an easy way to continue it is adding a domino line on the bottom.

Examples:
Hevesh5 uses this trick in her new domino record.