The ETB fighting creatures didn't technically break that rule as they're themselves creatures, but it was starting to get into a grayer area
Though its been reimagined and even given its own card since then, the definitive and cutest version of Fblthp is definitely the original from Gatecrash
Activated Abilities Activated abilities are abilities that you need to pay a cost on before using
The deck also goes by Orzhov Midrange and Orzhov Blink, so you may have heard of it under one of those names
If your deck is full of cards like Fauna Shaman and Chord of Calling so you have a lot of access to single copies of utility creatures in your deck, theres a lot of extra value to each extra bullet you can fit, and on top of that, the more narrow bullets you put in, the less you want the odds of accidentally drawing one of them to be, so the more cards you have, the less likely your are to draw a narrow bullet that youre hoping to only see when you search for it