The mirror is a grindy affair that is ultimately skill-based, but in an even matchup it can come down to draws
Being an Amber card, you have a lot of strong characters to choose from to fill this role: Mufasa, Betrayed Leader (how fitting), Hades, King Of Olympus, or Simba, Protective Cub (again, how fitting)
Turns out this card advantage creature is not just popular as an MTG commander - it's been run in loads of top Modern midrange builds over the past fortnight
Conformer Shuriken is an ideal way to swing past arbitrarily large tokens owned by green players, and the fact it also grows your own board is fantastic
Her ability, Support, allows players to add her Strength stat to another chosen character's strength when she goes questing
You probably want to go for the second option