Koma, Cosmos Serpent

At the beginning of your end step, draw a card if your life total is greater than your starting life total. Otherwise, you gain 2 life.

Distribute X +1/+1 counters among any number of creatures you control, where X is the amount of S spent to cast this spell. Then draw a card for each creature you control with power 4 or greater.

Search your library for a snow permanent card, a legendary card, or a Saga card, reveal it, put it into your hand, then shuffle. You gain 1 life for each S spent to cast this spell. (S is mana from a snow source.)

Affinity for snow lands (This spell costs 1 less to cast for each snow land you control.) When this creature enters, artifacts and creatures target opponent controls don't untap during that player's next untap step. Return three snow lands you control to their owner's hand: Return this creature to its owner's hand.

+1: Put a ghostform counter on up to one target nontoken creature. It gains "When this creature dies or is put into exile, return it to its owner's hand and create a 1/1 white Spirit creature token with flying." −3: Exile target nonland permanent. −7: You get an emblem with "At the beginning of your upkeep, you may cast a legendary spell from your hand, from your graveyard, or from among cards you own in exile without paying its mana cost."

Your opponents can't gain life. At the beginning of your upkeep, Quakebringer deals 2 damage to each opponent. This ability triggers only if Quakebringer is on the battlefield or if Quakebringer is in your graveyard and you control a Giant. Foretell 2RR

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Create a 2/2 blue Shapeshifter creature token with changeling. II — Any number of target Shapeshifter creatures you control have base power and toughness 4/4. III — Choose up to one target creature or planeswalker. Each creature with power 4 or greater you control deals damage equal to its power to that permanent.

SS: This creature becomes a Spirit Warrior with base power and toughness 2/3. SSS: If this creature is a Warrior, put a flying counter on it and it becomes a Spirit Warrior Angel with base power and toughness 4/4. SSSS: If this creature is an Angel, put two +1/+1 counters on it and it gains "Whenever this creature deals combat damage to a player, draw a card."