This question is basically a variation on this one. Yesterday during a game I encountered a rather puzzling (for me) combat interaction involving Inquisitor's Flail.
Let's say I have a 3/3 trample first strike equipped with Inquisitor's Flail, and my opponent has a 3/3 of their own. I attack with my 3/3, and my opponent blocks.
I understand that if my creature didn't have first strike, I would assign 0 damage to defending player, since I have to assign lethal damage (=3) to the creature before the damage is doubled by the Flail (bringing it to 6).
Does first strike change this interaction in any way?