New players can pick them up quickly, while experienced players can tune them for higher power levels
Some examples: Swords to Plowshares, Teferis Protection, Chaos Warp, Great Train Heist (or other Spree cards, you pay extra costs but can go wild), Akromas Will, Deflecting Swat, Wear/Tear, and my personal favorite, Reprieve
But As a Game My experience with Lorcana depends greatly on my opponent
Opposing Hate Common answers to your graveyard-based strategy include Rest in Peace, Leyline of the Void, Grafdiggers Cage, and Relic of Progenitus
If youre worried about build time (which is usually about 50 minutes), you can mitigate time anxieties by having a baseline done early (i.e., I know Im playing UB because I have Edgar, Sephiroth, Odin, and Ultimecia, Time Sorceress, but should I splash red for anything?)
The Adventure here isn't great, but it is upside on a Town that can tap for Blue, so a deck like U/G is still likely to play it