A 3/3 Esper Sentinel effectively shuts down non-creature spells or provides massive card advantage
This is a less fun version of the deck for your opponents, but it exploits the ability to make clean hits
For example, creatures like Burglar Rat, Liliana's Specter, and Plaguecrafter will demand players to sacrifice something or discard a card
Youll want to have tokens and +1/+1 counters around, so that you remove counters to populate, and sacrifice creatures (ideally tokens) to proliferate
If that doesnt work, try Putting It All Together to stop a big bad character in their tracks and survive to quest again next turn
A transformation can be achieved relatively easily, especially if proven to be more splashable than it initially seems