msem-instigator

Flash
Enchant creature
Enchanted creature has erratic. (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order.)

Search target player's library for a card and exile it. Then that player shuffles.

({T}: Add {U} or {R}.)
Steamlit Peaks enters tapped.
{1}, {T}: Add {U}{U} or {R}{R}.

Kicker {2} (You may pay an additional {2} as you cast this spell.)
Prowess
When Merkurio's Opus enters, if it was kicked, draw two cards, then discard two cards.

Trial 4 (As you cast this spell, an opponent of your choice may pay 4 life. If they don't, they fail the trial.)
Search your library for an Angel card, reveal it, put it into your hand, then shuffle. If the trial was failed, non-Angel, non-God creatures can't attack or block until your next turn.

Controlled Burn deals 2 damage to target player or planeswalker.
At the beginning of your upkeep, you may exile Controlled Burn from your graveyard. If you do, it deals 2 damage to target player or planeswalker.

Reverberate {3} (When you cast this spell, copy it if you paid its reverberate cost. You may choose new targets for the copy.)
Target creature can't block this turn.
Target creature can't be blocked this turn.

Enchant two nonland permanents you control
Once each turn, when you activate an ability of one of the enchanted permanents, you may put a +1/+1 counter, a loyalty counter, or a charge counter on each enchanted permanent. (They can be different counters.)

Menace
Whenever you cast a spell from your graveyard, The Selhoff Twins deals damage equal to that spell's mana value to any target. Then copy that spell. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

Reach, trample
Revive {4}{G} ({4}{G}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Whenever Wavering Sorcerer attacks, you may switch its power and toughness until end of turn.
Unveil {3}{U}{R} ({3}{U}{R}: Transform this. Unveil only as a sorcery.)

Lifelink
When Slaffield Work-Hauler enters, create a 0/2 white Ox creature token for each enchantment you control.
Whenever an enchantment you control enters, Oxen you control get +1/+1 until end of turn.

Enchant land
Enchanted land has “{T}: Each opponent loses 2 life.”

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Draw two cards. [Then discard two cards.]

Flying
Whenever Everember Phoenix deals combat damage to a player or planeswalker, you may put target exiled card you own or card in your graveyard that shares a name with it into your hand.
Revive {1}{R}{R} ({1}{R}{R}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

[+1]: Until your next turn, when up to one target creature dies, return a creature card with lesser mana value from your graveyard to the battlefield tapped.
[–1]: Target player discards a card. When they do, return a card with equal mana value from your graveyard to your hand.
[–2]: You may sacrifice a creature. When you do, exile target nonland permanent.

Haste
Arise {2}{R} ({2}{R}, Exile this from your graveyard as a sorcery: Create a black token copy of it that's also a Zombie and can't block.)

Mountains you control have “{T}: Add {R}{R}.”
[+2]: Exile the top card of your library. You may play that card until the end of your next turn.
[–2]: Conjure six cards named Scorch. Shuffle them and your hand into your library, then draw two cards.

Whenever another creature you control dies, put a +1/+1 counter on Marshy Marauder.
When Marshy Marauder dies, create a 1/1 green Insect creature token for each counter on it.

You may look at the top card of your library and face-down permanents you don't control.
{T}: Exile the top card of your library. If it's an Angel card or a card with morph, you may play that card this turn.

Enchant creature
At the beginning of combat on your turn, create a token that's a copy of enchanted creature, except it has haste. Exile that token at the beginning of the next end step.

Conjure Quicksand deals 1 damage to each creature and planeswalker you don't control and each battle you don't protect.

Put a -1/-1 counter on target creature. Purge the Harbor deals 1 damage to that creature's controller.

{T}: Add {C}.
{1}, {T}, Sacrifice Perilous Passage: Destroy target nonbasic land. Activate only if an opponent controls four or more lands.

Create a 1/1 white Human Samurai creature token, then create an additional one of those tokens for each card named Honor and Glory in your graveyard.