If you can keep Imperial Recruiter alive long enough, it's incredibly easy to create a winning board state just through this one card and a way to recur it
A mill deck uses a strategy that depends on emptying its opponents library, rather than reducing their life total
Etali, Primal Sickness gives players poison counters when it deals combat damage (in other words, infect) to a player, and a player loses the game with ten poison counters
If you do control your commander, then you get to put a +1/+1 counter on each Creature you control at the beginning of your combat step
The final piece of creating the groundwork for the set included a long list of concepts that I built the initial set file around and handed off to Gavin's team for future reference
I couldnt teach someone how to play Lorcana better than Gateway does, which is something I couldnt say about any other game Ive taught.