Zigzagged, however, in the sense that it doesn't stop you from creating and using a deck completely unrelated to the theme of the event in case the banlist doesn't restrict it, like the use of True Dracos and/or Monarchs (neither of which uses the Extra Deck in any way or form) during Extra Deck-themed Festivals

$0.59 Corpses of the Lost The Lost Caverns of Ixalan $0.35 Paragon of Open Graves 2015 Core Set $0.35 March of the Drowned Ixalan $0.59 Corsair Captain The Lost Caverns of Ixalan Commander Decks $0.49 Francisco, Fowl Marauder The Lost Caverns of Ixalan Commander Decks $0.49 Skeleton Pirate Token The Lost Caverns of Ixalan $2.29 Blood Money The Lost Caverns of Ixalan Commander Decks $1.79 Tormod, the Desecrator Commander Legends $0.49 Malcolm, Keen-Eyed Navigator The Lost Caverns of Ixalan Commander Decks $0.49 Gemcutter Buccaneer The Lost Caverns of Ixalan Commander Decks $2.49 The Indomitable The Lost Caverns of Ixalan Commander Decks $0.35 Death-Priest of Myrkul Adventures in the Forgotten Realms 0 results found
Others want a whole set for a casual draft with friends
While its true that your main deck removal can answer most of these, timing is critical
However, they are similar to each other, and their influence is far inferior to Skidre in that even if they are opened during the opponent's turn, they will not interfere with the opponent
if both types are resistant, it will take 1/4 the damage