So today I finally came to my conclusion of 2 days research on claw trick.
here is what you need.
-2 Accounts 1 fake one and 2nd your main account.
Use your fake account and use the claw.
Observe the tile which it pick ups.
For example the claw picks up 4 tile on 2 row.
That's the tile the claw will pick even on your main account.
Now try that on your real account.
You will see it will pickup the same tile which you did on the fake account.
Look out for a good permanent item.
When something good shows up on that tile I.E the 4 tile on the 2nd row stop the claw.
Et Voila you are done.



Note:
I am 90% Sure that this will work, dunno about 10%.