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ANY INSTANT/SORCERY COPYING EFFECT + ANY OTHER INSTANT/SORCERY COPYING EFFECT If you have a permanent with Magecraft in play, and you copy a spell with any spell-copying effect like Twincast, you can then copy your Twincast with another spell-copying instant or sorcery like Reverberate

The app now has an errata for both languages

for Level 8 ("Superbia", "Zerato", "Nergal" and "Asmodeus") there are "Archlord Kristya", "Invoked Augoeides", and "Flowering Etoile the Melodious Magnificat" and for Level 4 ("Indulged", "Capricious", "Djehuty"), "Herald of the Arc Light" is the optimal choice

You can also see Box Toppers and Commander deck cards in the Dominaria United Commander Card Image Gallery