This creature can't block.
You may cast this card from your graveyard as long as you control a Zombie.

+1: Reveal the top card of your library. If it's a creature card, put it into your hand. Otherwise, put it on the bottom of your library.
−2: Target creature you control deals damage equal to its power to another target creature.
−7: Until end of turn, creatures you control gain "You may have this creature assign its combat damage as though it weren't blocked."

Whenever a creature dies, you may have this enchantment deal damage to target player equal to the number of cards in that player's hand.

Commander spells you cast have cascade. (Whenever you cast a commander, exile cards from the top of your library until you exile a nonland card with lesser mana value. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Destroy all creatures.
II — Mill four cards. When you do, return target creature card from your graveyard to your hand.
III — Whenever a creature you control attacks alone this turn, put three +1/+1 counters on it. It gains trample, lifelink, and indestructible until end of turn.

: Add .
, Sacrifice this land: Return target land card from your graveyard to your hand.

Whenever one or more creatures you control with mana value 3 or less enter, draw a card. This ability triggers only once each turn.

Destroy target artifact or enchantment.

When this creature enters, you may destroy target artifact or enchantment.

Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."

Exile target creature. Its controller gains life equal to its power.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)
As long as Tandem Lookout is paired with another creature, each of those creatures has "Whenever this creature deals damage to an opponent, draw a card."

Flying
Whenever Weatherlight deals combat damage to a player, look at the top five cards of your library. You may reveal a historic card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. (Artifacts, legendaries, and Sagas are historic.)
Crew 3

Char deals 4 damage to any target and 2 damage to you.

Counter target spell. Create X Treasure tokens, where X is that spell's mana value. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

Untap all creatures you control and all creatures target opponent controls. You and that opponent each gain control of all creatures the other controls until end of turn. Those creatures gain haste until end of turn.

Changeling (This card is every creature type.)
Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature.

Whenever this creature becomes untapped, you may pay . If you do, draw a card.
Whenever an opponent casts a spell from anywhere other than their hand, draw a card.
Discard a card: This creature can't be blocked this turn.