A question on magic find and minions

Hi everyone

After pausing Diablo 2 for 20 years I started to play again with my two sons a few weeks ago. We started "blank" with no gear and therefore I decided to play a summoner druid (my sons playing a nec and a pala) to get all of us through hell on selffound gear.

It played out very well and with farming and trading by now we have some solid gear. I use an Enigma, Jalals with

Topaz, Chancies, War Travs, Arachnid, BK + SOJ, Maras, Spirit Shield and HOTO + CTA. As you can see I tried to put some focus on MF (I use some SCs with MF and GCs with +Skills, too) and here is my question on what I did not find anything on Google:

I know that my Merc gets his and my MF when he kills a monster and my MF is applied to my minions. But is this application to the minions done/calculated on casting them or dynamically when I switch my gear? (e.g. I currently switch to CTA and put on a nagel before killing a boss). If it is done on casting of course I can save myself the trouble of switching items So if anyone could enlighten me on this issue it would be very appreciated

Not sure, but I think the game use your current MF for the minions/Merc kills too

the mf you have when he dies is the mf that you get, so if you have 0% mf starting to kill him and switch to 300% mf before he dies, then you get 300% mf chance on the drops, but if you play with a party its the one that get the killing blow mf that counts.

Thx @all for your replies. It seems I have to keep switching weapons

A trapsin can greatly benefit from this technique casting traps with fighting gear then switching to mf gear (say, a combo of an Ali Baba

Blade furnished with

Ist runes and a Rhyme shield, or a 6 os

Phase Blade and a 4 os

Monarch shield both furnished with

Ist runes) right before a unique monster dies.