Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Maddening Wind

Enchant creature
Cumulative upkeep {G} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of the upkeep of enchanted creature's controller, Maddening Wind deals 2 damage to that player.

Verduran Enchantress

Whenever you cast an enchantment spell, you may draw a card.

Kaysa

Gorilla Berserkers

Trample; rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)
Gorilla Berserkers can't be blocked except by three or more creatures.

Pale Bears

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Forest

Fyndhorn Pollen

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
All creatures get -1/-0.
{1}{G}: All creatures get -1/-0 until end of turn.

Frostweb Spider

Reach (This creature can block creatures with flying.)
Whenever Frostweb Spider blocks a creature with flying, put a +1/+1 counter on Frostweb Spider at end of combat.

Fyndhorn Elder

Yavimaya Ancients

{G}: Yavimaya Ancients gets +1/-2 until end of turn.

Elvish Ranger

Aurochs

Trample
Whenever Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

Giant Growth

Target creature gets +3/+3 until end of turn.

Fyndhorn Elves

Thoughtleech

Whenever an Island an opponent controls becomes tapped, you may gain 1 life.

Harmonize

Elvish Bard

All creatures able to block Elvish Bard do so.

Deadly Insect

Shroud (This creature can't be the target of spells or abilities.)

Regeneration

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
{G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Gift of the Woods

Enchant creature
Whenever enchanted creature blocks or becomes blocked, it gets +0/+3 until end of turn and you gain 1 life.

Werebear

{T}: Add {G}.
Threshold — Werebear gets +3/+3 as long as seven or more cards are in your graveyard.

Bull Aurochs

Trample
Whenever Bull Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

Fyndhorn Druid

When Fyndhorn Druid dies, if it was blocked this turn, you gain 4 life.

Juniper Order Druid

Aurochs Herd

Trample
When Aurochs Herd enters, you may search your library for an Aurochs card, reveal it, put it into your hand, then shuffle.
Whenever Aurochs Herd attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

Wild Growth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

Upwelling

Players don't lose unspent mana as steps and phases end.

Song of Freyalise

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Until your next turn, creatures you control gain "{T}: Add one mana of any color."
III — Put a +1/+1 counter on each creature you control. Those creatures gain vigilance, trample, and indestructible until end of turn.

The World Spell

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)
I, II — Look at the top seven cards of your library. You may reveal a non-Saga permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
III — Put up to two non-Saga permanent cards from your hand onto the battlefield.