msem-instigator

Basic Forests you control have “{G}, {T}: Untap target attacking creature and remove it from combat.”

{1}{G}{G}, Sacrifice a creature: Search your library for a creature card with mana value X or less, where X is 1 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.

For each player, that player may search their library for a basic land card, choose a land card from their hand, and choose a land card from their graveyard, then put those cards onto the battlefield tapped. Then each player that searched their library this way shuffles it.

Other Warriors you control have trample.
{G}: Chratteri Valiant gets +2/+2 and gains trample until end of turn. Activate only once each turn.

Other creatures you control get +1/+1 as long as you control four or more lands.
{G}, Sacrifice Daisy, the Heart of Chasmek: Creatures you control with base power 1 or less gain indestructible until end of turn.

At the beginning of your upkeep, look at the top four cards of your library. You may reveal a storied card from among them and put it into your hand. Put the rest on the bottom of your library in any order. (Enchantment and legendary cards are storied.)

As an additional cost to cast this spell, tap three untapped creatures you control with power 1 or less.
Search your library for a creature card, put it onto the battlefield, then shuffle.

Haste
When Greenwood Outrider enters the battlefield, creatures you control gain trample and get +X/+X until end of turn, where X is the number of storied permanents you control. (Enchantments and legendary permanents are storied.)

{1}{G}{G}, Discard a card: Destroy target artifact or enchantment.
At the beginning of your end step, if twelve or more cards are in your graveyard, create two 3/3 green Beast creature tokens.

Put target artifact or enchantment with mana value less than or equal to the number of basic lands you control on the bottom of its owner's library.

When Meadow Songstress enters the battlefield, conjure three cards named Meadow Songstress and shuffle them into your main library.
Whenever a nontoken creature enters the battlefield under your control, if it shares a name with one or more other creatures you control, draw a card.

Vigilance, reach, trample

When Ol' Sycamore enters the battlefield, choose up to two —
• Ol' Sycamore fights another target legendary creature.
• Destroy target noncreature storied permanent. (Enchantments and legendary permanents are storied.)

Trample
When Remnant of the Wild enters the battlefield, if you cast it, untap all lands you control.

Trample
Players can't activate abilities of nonbasic, noncreature permanents.

Sacrifice any number of lands. Search your library for that many basic land cards, put them onto the battlefield, then shuffle.

[+1]: Emperor Tzhai deals 1 damage to each creature, planeswalker, and opponent you don't control.
[0]: Target creature can't attack you or Emperor Tzhai until Emperor Tzhai leaves the battlefield.
[–10]: You control target player.

Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on it and draw a card.
Equip {1}

Your opponents play with their hands revealed.
Whenever you cast a spell with the same name as a card in an opponent's hand, draw two cards.

At the beginning of your upkeep, reveal the top two cards of your library. An opponent chooses one. Put the chosen card into your hand and exile the other.
{4}, {T}: Put a card exiled with The Knowledge Hub into its owner's hand.

{5}, {T}, Sacrifice Voidlife Orbs: Destroy all nonland permanents. You can't spend more than one color of mana to activate this ability.

Crystal Garden enters the battlefield tapped.
{T}: Add one mana of any color. You can't spend this mana to cast a creature spell.

{T}: Add {C}.
{2}, {T}: For each color among cards in your graveyard, add one mana of that color.

Mirrorgate enters the battlefield tapped.
When Mirrorgate enters the battlefield, if it isn't a copy, choose a nonbasic land card name other than Mirrorgate.
Lands with the chosen name are copies of Mirrorgate.
{T}: Add one mana of any type that a land you control could produce.

{T}: Add {C}.
{7}, {T}: Copy target instant or sorcery spell with {X} in its mana cost. You may choose new targets for the copy. This ability costs {1} less to activate for each instant and sorcery card in your graveyard.