(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II, III — Reveal cards from the top of your library until you reveal a Doctor card, a card with doctor's companion, or a Vehicle card. Put that card into your hand and the rest on the bottom of your library in a random order.

You have shroud. (You can't be the target of spells or abilities.)

Creatures you control get +1/+1.
Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Each player may play an additional land during each of their turns.
Whenever a land is tapped for mana, return it to its owner's hand.

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Return all attacking creatures to their owner's hand.

Ward—Discard a card.
Whenever a creature an opponent controls enters, Gideon deals 1 damage to that player.
Whenever an opponent activates a loyalty ability, Gideon deals 1 damage to that player.

First strike, haste
Whenever Kellogg attacks, create a Treasure token.
Sacrifice five Treasures: Gain control of target creature for as long as you control Kellogg. Activate only as a sorcery.

If you control a creature, damage that would reduce your life total to less than 1 reduces it to 1 instead.

Each player who controls an artifact or enchantment creates a 2/2 green Bear creature token. Then destroy all artifacts and enchantments.

: Add .
, , Sacrifice this land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.

Flying, lifelink
At the beginning of your end step, put a number of +1/+1 counters on up to one other target creature you control equal to the amount of life you gained this turn. Return up to one target creature card with mana value less than or equal to the amount of life you lost this turn from your graveyard to the battlefield.

All creatures get +1/+1 until end of turn.

Flying
, : Target opponent exiles the top card of their library. Until end of turn, you may play that card. ( is the untap symbol.)

This spell costs less to cast for each different mana value among cards in your graveyard.
Whenever you discard a nonland card, you may cast it from your graveyard.

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
When Emry enters, mill four cards.
: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Creatures you control can't be blocked except by legendary creatures.
Whenever one or more creatures you control deal combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

+4: Target player exiles a card from their hand.
−3: Exile target permanent.
−14: Restart the game, leaving in exile all non-Aura permanent cards exiled with Karn. Then put those cards onto the battlefield under your control.

Flash
When this creature enters, change the target of target spell that targets only a single creature to this creature.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

As this land enters, you may reveal a Faerie card from your hand. If you don't, this land enters tapped.
: Add or .