Since returning the Nightmare to your hand is part of the activation cost, there is no opportunity for your opponent to destroy it
As well as the cereal choice at the start or the two music choices (the tape Stefan picks on the bus ride and the record he buys in the shop), there's the impulse you want Stefan to make in the therapist's office (he'll resist it either way), when Stefan gets given a higher medication dose after Colin tells him his theory about mind control (he'll either throw his pills in the bin or flush them down the toilet), or anything to do with the fourth-wall breaking "Netflix" ending (with one choice between "Yes" or "Fuck Yeah", both leading to a massive unrealistic fight scene)
Zoodiac Tri-Brigade combos The core one-card Fraktall combo What makes Zoodiac Tri-Brigade powerful is the ability to put out a strong field using just a single card
Along with this, at the beginning of your end step, you'll create a 0/0 red Gremlin artifact creature with X +1/+1 counters on it, where X is the number of differently named artifact tokens you control
Winter is a commander that can cheat out strong cards early if you're lucky enough to mill them