Against Aggressive decks, Karn, Treasure Map, and Arch of Orazca are enough to generate card advantage in the matchup
Mogukai Lighthouse Creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didnt have hexproof
However, if you do, and that creature card is an illegal target at the time Mourner's Surprise tries to resolve, it won't resolve and none of its effects will happen
Reception to Partner and Partner With is mixed
Card choices prioritize how pieces interact with your commander and with each other (e.g., self-mill as draw, modal spells for double Kess value) instead of blindly jamming the usual staples
You could design an entire Magic expansion, create a whole new version of MTG, or even make a deck entirely out of metallic foiled playing cards