The most valuable "Mayakashi" Spell/Traps are "Mayakashi Return", the Deck's search Spell, and "Ghost Meets Girl - A Masterful Mayakashi Shiranui Saga", a powerful suppression Trap that prevents the opponent from Special Summoning from all locations except the Graveyard for a turn, if the player Tributes a "Mayakashi" or "Shiranui" Synchro or Link Monster
On the owner's turn, it's used to stop a hand trap from interrupting a strategy
Close and Sunarizamon from Digimon Liberator are back
Heroic Second Wind: If he runs out of either Health or Sanity, once per game, he can fully heal and adjust his stats to continue the struggle, turning into one of the two "Resolute" versions
Based on what we know so far, it feels like the Mega Evolution series will be relatively small, lasting only about a year to a year and a half
Discard the Future cards you revealed this way, and shuffle the other cards back into your deck