You wisely have an untapped Island and a Brainstorm in hand
Deny Existence: Dissipate at common, same casting cost, but single blue instead of double blue mana
While Craft has some additive abilities that can cause confusion, and Descend or Descended really feels like three different keywords mashed into one, the new MTG Discover mechanic is definitely the most complex of the three at least, without additional context

$139.99 Tifa Lockhart (0536 - Borderless Surge Foil) Final Fantasy Variants $24.99 Dion, Bahamut's Dominant (0521 - Borderless Surge Foil) Final Fantasy Variants $44.99 Golbez, Crystal Collector (0540 - Borderless Surge Foil) Final Fantasy Variants $94.99 Clive, Ifrit's Dominant (0530 - Borderless Surge Foil) Final Fantasy Variants $32.99 Jill, Shiva's Dominant (0523 - Borderless Surge Foil) Final Fantasy Variants $24.99 Cecil, Dark Knight (0525 - Borderless Surge Foil) Final Fantasy Variants $69.99 Squall, SeeD Mercenary (0547 - Borderless Surge Foil) Final Fantasy Variants $229.99 Celes, Rune Knight (0209 - Borderless Surge Foil) Final Fantasy Commander Decks Variants $17.99 Firion, Wild Rose Warrior (0531 - Borderless Surge Foil) Final Fantasy Variants $3.49 Vanille, Cheerful l'Cie (0537 - Borderless Surge Foil) Final Fantasy Variants $3.49 Fang, Fearless l'Cie (0526 - Borderless Surge Foil) Final Fantasy Variants $29.99 The Wandering Minstrel (0548 - Borderless Surge Foil) Final Fantasy Variants 0 results found

He also had Jace cast an illusion so that everyone would believe the dragon to be dead instead of trapped
Nemata, Primeval Warden Saprolings are an archetype thats all about sacrificing the tokens, and Nemata, Primeval Warden is the best commander for this