first edition pokemon card back 1999 1st & Base Set , Vintage Holo pokemon cards 100% Authentic Cyndaquil and Totodile How to Tell if a

You can find all of the decklists for this event here and the data sheet here

However, if we search for Dark Ritual, well see that it is in fact banned there

Vivi Ornitier Rarity: Mythic Rare TYPE: Legendary Creature SUBTYPE: Wizard CMC: 3 Mana cost: USD: $77.08 EUR: 61.49 TIX: 4.46 EDHREC RANK: 1256 : Add X mana in any combination of and/or , where X is Vivi Ornitier's power

These types of combo decks want to reanimate Cauldron Familiar as many times as possible, all while draining 1 life out of the opponent

It is described in more detail in the Wizards' Tournament document, but basically you just exile the top card of your library whenever a duel starts, and get it back after the duel