When destroyed by battle, Giant Rat gives you the option to Special Summon one Earth Monster with 1500 or less ATK from your deck in attack position
We want to have a1-47-moltres-ex in the Active spot early into the game and use Inferno Dance to attach Fire Energy on a2-27-chimchar and a2-28-monferno
For context on how other MEGA-era sets have tracked, see our Mega Brave Pull Rates guide
Put simply, these sorts of two-for-ones are single, individual pieces of cardboard that either trade for multiple (i.e., "two") opposing cards, or deal with an opposing card while leaving a little something behind
Here you can read all about his very personal "work, life and Magic" balance
Secondly, Sakazuki can also allow you to give one of your opponents Characters -1 cost when you use him to attack on your turn