This is the person who the audience sees playing the game for most of the arc/series, and if the Greater-Scope Villain is somehow incapable of dueling directly, will take the role of the "final opponent to save the world." Sometimes will pull a HeelFace Turn against all odds, especially if this villain betrayed him and/or if he took the time to befriend the main character, although expect Redemption Equals Death if so
Utility spells work for me, but your mileage may vary
This includes participating in battles, completing missions, and opening Pokmon TCG Pocket Genetic Apex packs
If you sacrifice a Human creature to Falkenrath Aristocrat, you can start tacking on +1/+1 counters to it
If you don't control any Dinosaurs at that time, or if the Dinosaurs you control are unusually small, Triumphant Chomp will deal 2 damage