For Limited in generaland this is just a guidelineI'd look to play something like this: 1 mana: 02 2 mana: 46 3 mana: 35 4 mana: 24 5 mana 13 6+ mana: 02 Once you have those figured out, go ahead and add in your noncreature spells
Each person at the table is going to be working toward a plan to advance their position and set you back, so you should make sure you are similarly prepared
The new card, Mirabel Madrigal Family Gatherer features the most Lore seen on a Lorcana card to date, with players able to earn a whopping 5 Lore when she quests
Night's Whisper might do much the same for your card advantage situation for the mana and it wouldn't becomes useless as your opponent consumed their hand but that is entirely overlooking the disruption caused by discard
Overall Stoneforge Mystic has been an excellent unban and one of the most fun cards in Modern to play with
All original versions of the cards that were redeemed are destroyed, making the original versions of the cards more valuable in the long term