Defender Sokrates has hexproof as long as it's untapped. Sokratic Dialogue — {T}: Until end of turn, target creature gains "If this creature would deal combat damage to a player, prevent that damage. This creature's controller and that player each draw half that many cards, rounded down."

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Take an extra turn after this one. Exile Temporal Trespass.

When Yggdrasil enters, exile all creature cards from your graveyard. {T}: Exile the top three cards of your library. {4}, {T}: Put a creature card exiled with Yggdrasil onto the battlefield under your control. It gains haste until end of turn. Activate only as a sorcery.

Flash All creatures have shroud. (They can't be the targets of spells or abilities.) At the beginning of your upkeep, sacrifice this artifact. When you do, target creature you control can't be blocked this turn.

When this creature enters, choose one — • Tax — Until your next turn, spells your opponents cast cost {1} more to cast. • Arrest — Detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

You may look at the top card of your library any time. You may play historic lands and cast historic spells from the top of your library. (Artifacts, legendaries, and Sagas are historic.) {T}: Add {U}.

Whenever a creature you control deals combat damage to an opponent, you may draw a card.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — You and target opponent each draw two cards. II — Exile target artifact an opponent controls. III — Each player chooses three nonland permanents they control. Destroy all other nonland permanents.