As long as there are four or more lore counters among Sagas you control, Tom Bombadil has hexproof and indestructible.
Whenever the final chapter ability of a Saga you control resolves, reveal cards from the top of your library until you reveal a Saga card. Put that card onto the battlefield and the rest on the bottom of your library in a random order. This ability triggers only once each turn.

First strike
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

You may play an additional land on each of your turns.
Play with the top card of your library revealed.
You may play lands from the top of your library.

Target spell or permanent becomes white. (Mana symbols on that permanent remain unchanged.)

As this artifact enters, choose an opponent and a card name other than a basic land card name.
The chosen player reveals each card they draw.
When the chosen player draws a card with the chosen name, sacrifice this artifact. If you do, this artifact deals 10 damage to that player.

Deathtouch
Whenever this creature deals combat damage to a player, they lose half their life, rounded up.
When this creature dies, if it had no counters on it, return it to the battlefield tapped under its owner's control with two stun counters on it.

Flash
Other Merfolk you control get +1/+1.
Sacrifice a Merfolk: Counter target noncreature spell unless its controller pays .

At the beginning of your upkeep, you draw a card and you lose 1 life.

The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way.

, : Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
At the beginning of your end step, if you control seven or more lands, transform this artifact.

: Add .
, : Draw a card. Activate only if you control a creature with power 4 or greater.

: You draw a card and target opponent gains 3 life.

Whenever a creature you control dies, put a loyalty counter on Lolth.
0: You draw a card and you lose 1 life.
−3: Create two 2/1 black Spider creature tokens with reach and menace.
−8: You get an emblem with "Whenever an opponent is dealt combat damage by one or more creatures you control, if that player lost less than 8 life this turn, they lose life equal to the difference."

Flying, trample
At the beginning of your end step, target opponent may sacrifice two nonland, nontoken permanents of their choice. If they don't, you draw two cards.

Choose one. If you control a commander as you cast this spell, you may choose both instead.
• Any number of target opponents each sacrifice a creature with the greatest power among creatures that player controls and lose 3 life.
• Return target creature card from your graveyard to the battlefield.

(: Add .)

Haste
Wither (This deals damage to creatures in the form of -1/-1 counters.)

Creatures you control gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)
Draw a card.

(: Add .)
As this land enters, you may behold a Jace. If you don't, this land enters tapped. (To behold a Jace, choose a Jace you control or reveal a Jace card from your hand.)
, : Empower Jace 2.

When this creature attacks or blocks, at end of combat, sacrifice it and it deals 5 damage to you.
, : Return target permanent that isn't enchanted to its owner's hand.