Sac outlets that dont cost mana can be taken advantage of to perform loops and combos, and so picking up one or both of these is an excellent way to kickstart your collection
Lets start with the against the odds plan first: some players are hyped about using Rotpiest as a combo piece, trying to storm off and target it a bunch of times with something like Ground Rift to poison the opponent out of the game
It starts with Chatterfang, Squirrel General (the name is a bit on the nose, but hey, why not), but it goes much deeper
The blue wheels usually shuffle cards away, but Wheel of Fortune and friends discard cards and replace them
Upload a photo of your friend, put their face on a card with their favorite creature type listed, and ship them something they'll actually frame
If using the Grey Wanderer contract, either one of these could be put into play right at the start of the game