Umm...you misread it, I said that I know BTH works on Command Knight.
What I'm looking at though is this:
Inferno Reckless Summon
Quick-Play Spell
You can only activate this card when 1 monster with an ATK of 1500 points or less is Special Summoned to your side of the field while there is a face-up monster on your opponent's side of the field. Special Summon all cards with the same name as the Summoned monster from your hand, Deck, and Graveyard in face-up Attack Position. Your opponent selects 1 monster on their side of the field and Special Summons all cards with that same name from their hand, Deck, and Graveyard.
Now we know that IRS looks for a monster with an ATK of 1500 or less is special summoned. IMO, this card will be looking at the same timing as with cards such as BTH (I know it may not be the exact thing so don't roast me -_- ), as it is looking for just after the monster has been special summoned.
Extrapolating from BTH, Command Knight only works because when the monster has been special summoned, its ATK boost immediately applies, so that when the point of checking for the ATK of Command Knight as a condition for BTH to be activated, its ATK is now legal for BTH to work, otherwise BTH wouldn't work, right?
Now looking at the text for IRS, it looks for a monster with an ATK of 1500 or less when it is Special Summoned to the field, but by this point, Command Knight's effect has already applied, so the monster special summoned is now 1600 ATK, and thus no longer applicable.
My main concern is: Does IRS look for the current ATK of the monster special summoned, or does it look at the original ATK?
So I want to hear a reason or two, as to if this logic is correct, or correct me where I may have gone wrong.