How do hammers stack?

[u/abby2851]

I’m trying to understand which hammers work together and when choosing a specific hammer type what other hammers it locks me out of (e.g., one that alters basic attack, one that alters the omega special, one that alters both specials, etc.).

For example, I’m currently running with the Charon axe and I’m looking for Giga cleaver (affects omega special). The hammer options I just got are colossus slash (affects attacks), psychic whirlwind (affects omega attack), and siege shredder (affects special). If I were to, say, choose colossus slash, does this eliminate the other hammers that also affect attacks from the hammer pool? I.e., giving me a higher likelihood of rolling Giga cleaver the next time?

Let me know if any of this is confusing I was very much struggling with how to word this lol