msem-instigator

You may look at the top card of your library any time.
Once during each of your turns, you may cast an enchantment spell from the top of your library or from your graveyard.

Whenever you cast your second spell during each of your turns, you may activate one of Salome's loyalty abilities.
[+1]: Draw a card. Untap up to two lands.
[–4]: Destroy all creatures.
[–8]: You get an emblem with “You may pay {0} rather than pay the mana cost for the second spell you cast each turn.”

[+1]: Scry 1, then draw a card. You lose 1 life.
[–2]: Target player sacrifices a creature, then loses life equal to the greatest power among creatures they control.
[–5]: Choose a nonland card name. Exile all creatures and planeswalkers with that name, then search target player's graveyard, hand, and library for any number of cards with that name and exile them. That player shuffles.

{3}: Create a 9/9 colorless Angel artifact creature token with flying and lifelink.

[+1]: If you control a Llama, create a 1/1 white and black Bird creature token with flying and vigilance. Otherwise, create a 0/1 white Llama creature token.
[–2]: Creatures you control get +1/+0 and gain first strike and haste until end of turn.
[–3]: Sami, Aykeni Herder deals damage equal to the number of creatures you control to any target. You gain that much life.

Whenever Sanctuary is dealt damage, you gain that much life.
All damage that would be dealt to another creature you control is dealt to Sanctuary instead.

Look at the top six cards of your library. Put up to two creature cards with total mana value 4 or less from among them onto the battlefield and the rest on the bottom of your library in any order.
Ferocious — If you control a creature with power 4 or greater, put a +1/+1 counter on each creature you control.

The next time one or more creatures you control would die this turn, exile those cards. You may play them until the end of your next turn.

Creature spells you cast cost {2} less to cast.
Whenever a creature enters the battlefield under your control, if it doesn't have vanishing, put four time counters on it and it gains vanishing. (At the beginning of your upkeep, remove a time counter from that permanent. When the last is removed, sacrifice it.)

(Transform this if it's not attached to a creature. Pay {1}{R} as a sorcery to unattach it.)
Enchant creature you control
Scale Bearer's rider gets +4/+3 and has flying and haste.
Whenever Scale Bearer's rider attacks, you may pay {2}{R}. If you do, it deals damage equal to its power to target creature or planeswalker.

Counter target spell. Tap all lands that spell's controller controls and that player loses all unspent mana.

Menace
When Scion of Calamities enters the battlefield, exile the top two cards of your library. Until the end of your next turn, you may play one of those cards.
Whenever a Mountain enters the battlefield under your control, you may aetherize Scion of Calamities. (Create a token that's a copy of it, then exile that token.)

Deathtouch
When Scion of Desolation enters the battlefield, put target creature card with mana value 3 or less from a graveyard onto the battlefield under your control.
Whenever a Swamp enters the battlefield under your control, you may aetherize Scion of Desolation. (To aetherize, create a token that's a copy of it, then exile that token.)

Trample
When Scion of Flourishing enters the battlefield, put a +1/+1 counter on each other creature you control. Those creatures gain trample until end of turn.
Whenever a Forest enters the battlefield under your control, you may aetherize Scion of Flourishing. (To aetherize, create a token that's a copy of it, then exile that token.)

Vigilance
When Scion of Storms enters the battlefield, create a 2/2 white Elemental creature token with flying.
Whenever a Plains enters the battlefield under your control, you may aetherize Scion of Storms. (To aetherize, create a token that's a copy of it, then exile that token.)

Flying
When Scion of Torrents enters the battlefield, you may return target nonland permanent to its owner's hand.
Whenever a Island enters the battlefield under your control, you may aetherize Scion of Torrents. (Create a token that's a copy of it, then exile that token.)

Scorch deals 3 damage to any target.

Flying, haste
Ride {1}{R} ({1}{R}: Transform this and attach it to target creature you control without a Mount. Ride only as a sorcery.)

Flying, haste
Whenever Scourge of the Skies attacks, you may have it deal 5 damage to target creature.

({T}: Add {G}.)
Seedshrine enters the battlefield tapped.
When Seedshrine enters the battlefield, you may put a +1/+1 counter on target creature.

Reveal the top three cards of your library. Put one into your hand and the rest on the bottom of your library in any order.

At the beginning of your upkeep, you gain 1 life. Then if your life total is greater than or equal to your starting life total, you gain an additional 1 life and scry 1. Then if your life total is greater than or equal to three times your starting life total, you win the game.

Whenever you play a land, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
{1}{G}{U}{R}, Sacrifice three Clues: Exile cards from the top of your library until you exile three nonland cards. You may cast any number of those cards without paying their mana costs.

As long as a creature you control has flying, creatures you control have flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

As long as you control four or more lands, Seeker of Untouched Beauty gets +2/+2 and has trample.
When Seeker of Untouched Beauty dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.