This is the 16th Mini Box and was released on December 9, 2018. Secrets of the Ancients contains support for Gusto and Mecha Phantom Beasts decks.
Trap Stun will be used in sidedecks during trap-heavy metas. It is a great card to get, since it's the trap counterpart of Magic Deflector.
This card is pretty slow, but can be a good side deck card for certain matchups.
Sweet tech in to relieve the player from Trap heavy decks used by Odion players. May also be a splash-able option for Silent Swordsman and Silent Magician decks to deal with their weakness to trap cards.
Elemental HERO Great Tornado
Tornado is a nice monster and a good comeback if youre in topdeck mode and get your Miracle Fusion. Sadly, the only two Wind Elemental HEROs are Elemental HERO Avian (trash) and Elemental HERO Stratos.
Would have been a decent card to use with Elemental HERO Avian if it wasn’t for the fact that Konami released Feather Shot in the Card Trader instead of Feather Wind which would have made Avian decent to use if there were more than one Feather Wind for the players to use. Right now, using Avian is a hassle just to go into Great Tornado.
Swallow Flip is a nice normal card to get for when the meta develops, right now it counters mostly (only) Karakuri Shogun mdl 00 "Burei" but it might very well be better in the future.
Decent tech in options against Special Summoned monsters such as Karakuri Shogun mdl 00 "Burei" as Shogun’s swarming is an 'on summon' effect.
Mecha Phantom Beast Tetherwolf
Tetherwolf can be a very good T1 opener for certain decks. (Control comes to mind)
Very reliable beater in token heavy decks such as its own Mecha Phantom Beast Archetype as it gains 800 attack during either player’s turn by just tributing its own token that it can summon on its own. Since the Mecha Phantom Beast deck can generate tokens quickly and efficiently already, Tether Wolf can be use right away.
Mist Wurm is one of the better synchro's in Yu-Gi-Oh!, sadly at this moment he is not that easy to summon. Karakuri can probably do it (but is it worth it?) and control has some ways to do it. Other than that I don't see many possibilities. It can be a contender with Junk Destroyer.
May be worth the cost of summoning with three materials as returning three cards to an opponent’s hand may place you in a position to win the duel that turn.
Pilica, Descendant of Gusto
Makes Synchro summoning a lot easier for Gusto deck now that they have another Gusto Synchro monsters, Daigusto Gulldos, from this box. Pilica have synergy with Gusto Falco to synchro summon Gulldos or Armades, Keeper of Boundaries.
Stardust Assault Warrior
Instant cheaper replacement for Flamvell Uruquizas as it serves as a generic toolbox Synchro for piercing and assist Junk Archetype decks. As a bonus, it also has the Warrior typing that have many supporting cards such as Silent Swordsman to let it fit in. However, the Wind attribute holds it back as Poisonous Winds is an available option for players to counter Wind monsters.
If you're not a streamer or youtuber that needs content: dont touch this box.
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