Combining enchantments in an anvil results in a lower level (for example: combining two efficiency II books makes efficiency III), and a bow with the infinity enchantment consumes standard arrows.
Comments 2
Thank you for your report!
However, this issue has been closed as Invalid.
Thank you for taking the time to mention these bugs. It would be most helpful if you could keep these reports to one bug per ticket though, so we can track the progress of each of them individually.
(You can find an example bug ticket here.)
Regarding the combining of enchants, this is working as intended.
Also, we'd recommend making use of the search feature before writing a new bug report, as it's very likely that the issue has been mentioned already, and you can add a vote and any new information to the main ticket.
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you need 2 of the same level enchant to get to next one.
1+1=2, 2+2=3, 3+3=4, and so on cuz that's how math works.