There is a school of thought that 41 cards also known as the 41 card special is practically the same as 40 when it comes to mathematics, but its generally recommended to stick to that 40 number
During your Main Phase: You can destroy 1 Dinosaur monster in your hand or field, then Special Summon 1 Dinosaur Normal Monster from your hand or Deck, also you cannot Special Summon from the Extra Deck for the rest of this turn, except Dragon, Dinosaur, Sea Serpent, or Wyrm monsters
These arent all valuable, but they are worth looking into
You can absolutely tap your Birds of Paradise for mana in response to your opponent using Sudden Shock to kill it
A lot of decks outside of Limited kinda forego combat tricks since they can work around what they do either with equipment, creatures, or other options
Sunset Revelry is already finding a home in defensively slanted white decks, and I expect that to be the case for a while