See my comment on White Cape. Abusing redundant triggers is silly. It's okay with things like Equipment Healer where its effect can occur occur once in a turn.

Um, yeah - this can easily become "Draw your enitre deck" with a suitably abusive piece of equipment, and the artifact lands :)

I'd drop the second part - the first part "Equip me for free just as I get into a fight" is pretty exciting already.

If we are keeping the second part, we should add something like "Whenever Weapon Tester becomes equipped for the first time this turn" even still too similar to Equipment Inventor.

The fact you get stuck on non-artifacts was my way of making it non-abusable. I guess you could theoretically have an all artifact deck, but this guy isn't an artifact so that's at least one hiccup.

I think i'd want someone to give an example of how this gets realistically abused before I'd red-flag it. It is not dangerous in limited IMO.

Perhaps this should be kite-sail enabled combat damage trigger instead.