These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] games-util/basis_universal-1.16.4::gentoo  USE="-opencl -zstd" CPU_FLAGS_X86="sse4_1" 28473 KiB

Total: 1 package (1 new), Size of downloads: 28473 KiB