If every creature in your deck has a unique type, then you can sacrifice this Shapeshifter, name that unique creature's type, and then reveal cards until you reveal that unique card and then put that card on the battlefield under your control
After all, most of the cards with the Lesson subtype would be incredibly subpar as cards in your main deck
In exchange, at the end step, the card will go to exile, where it can be cast for its full mana value
MTG: Reality Fracture Play Booster Display Publisher: Wizards of the Coast Item Code: WOCD5920 MSRP: $164.70 (30 packs) Releases October 2, 2026 Play Boosters are the ideal choice for exploring the set and playing Limited Format events
Balance the deck with 36-38 lands, 8-12 ramp, 8-12 card draw, 8-10 removal, 2-4 board wipes, 2-4 win conditions, and 25-30 synergy cards that support your commanders plan
Duskmantle Seer: junk mythic rare now a rare