Mycosynth Lattice (Rainbow Foil) Price

Updated 2026-08-24

Mycosynth Lattice is one of the most notorious lock pieces in Magic, best known for the Karn, the Great Creator combo that shuts opponents out of all activated abilities in colorless decks. This Rainbow Foil printing is the premium cosmetic version of the card, produced in a limited Secret Lair run. Recent 7 and 30 day windows show a mild bleed, consistent with a spec that ran up during Karn ban discussions and is now cooling off. Foil premium on the Rainbow treatment sits well above the standard foil, which limits the buyer pool to Commander deck builders and collectors who care about the alt art. Supply is finite because Secret Lair copies do not get reprinted in that treatment, so the market can absorb a rebound quickly if Modern or Legacy demand returns. Watch the ban list and any new Karn adjacent printing for the next real catalyst.