msem-instigator

Search target opponent's library for a card and exile it, then do the same for their hand and graveyard. That player shuffles. You may cast spells exiled this way for as long as they remain exiled, and you may spend mana as though it were mana of any color to do so.

As an additional cost to cast this spell, tap an untapped artifact or creature you control.
Up to three target creatures can't block this turn.

({T}: Add {G} or {U}.)
Soaring Rainforest enters tapped.
{1}, {T}: Add {G}{G} or {U}{U}.

Improve {1}{G/U} ({1}{G/U}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
You may play an additional land on each of your turns.
Wanderlust — At the beginning of your end step, if you control four or more differently named lands, you may draw a card.

{T}: Add {C}. Spend this mana only to cast an instant or sorcery spell or activate an ability.
{2}{U}: Move a counter from target creature onto another target creature.

Once each turn, when a player loses life, you may harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Each opponent loses 1 life and you gain that much life.

At the beginning of your upkeep, if you control a legendary creature, put a +1/+1 counter on Trossingen Warden.

Whenever you cast a spell that doesn't share a color with Stinging Hunter, each opponent loses 1 life.

When Daybreak enters, you gain 3 life.
Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.

Double strike

Whenever a creature dies, put a +1/+1 counter on Repository of Thoughts.
At the beginning of each combat, you may move a counter from Repository of Thoughts to target creature.

Whenever you draw a card, put a +1/+1 counter on Ontarachie Dryad.
Remove a counter from Ontarachie Dryad: Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

When Minister of Madness enters, create a 0/1 blue Weird creature token with flying.
{2}{U}, Sacrifice a creature: Search your library for an instant or sorcery card with mana value equal to 1 plus the sacrificed creature's mana value, exile that card, then shuffle. Then you may cast that card without paying its mana cost. Activate only as a sorcery.

Flying, vigilance
Orzhov Benefactor can't attack or block unless you pay {1} for each debt counter on it.
At the beginning of your upkeep, put a debt counter on Orzhov Benefactor.
{2}: Remove a debt counter from Orzhov Benefactor.

Whenever you gain life, put a +1/+1 counter or loyalty counter on up to that many target permanents.
Whenever you cast a white spell, create a 1/1 white Cleric creature token with lifelink.

Flash
When Notorious Smuggler enters, target opponent reveals their hand. Choose a nonland card revealed this way. Copy it. You may cast the copy this turn. (You still pay its costs, including color. Copies of permanents enter as tokens.)

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a time counter is removed from Burning Heels, exile the top card of your library. Until end of turn, you may play that card.

Akimbo Slash deals 1 damage to each of up to two target creatures.
Ferocious — Those creatures can't block this turn if you control a creature with power 4 or greater.

At the beginning of your first upkeep each turn, choose one —
• Replace your first main phase this turn with an additional upkeep step.
• Replace your second main phase this turn with an additional combat phase.

Wild Ravine enters tapped unless you control two or more red and/or green permanents.
{T}: Add {R} or {G}.

Ravenous Hollow enters tapped.
{T}: Add {B} or {R}.
{2}{B}{R}: Until end of turn, Ravenous Hollow becomes a Wolf creature with first strike in addition to its other types.
Scavenge {2}{B}{R}

Deathtouch, lifelink
Improve {1}{W/B} ({1}{W/B}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
{4}: Target creature gains deathtouch and lifelink until end of turn. Activate only during a player's first main phase.

Gain control of target creature until end of turn. Put a +1/+1 counter on it and another target creature you control and untap them. Those creatures gains haste until end of turn.

Creatures you control get +2/+1 until end of turn. Embattled creatures you control gain vigilance until end of turn. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Equipped creature gets +1/+3.
Whenever another creature blocks or becomes blocked by equipped creature, that creature loses all abilities until end of turn.
Equip {3}