msem-instigator

When Encrypted Monument is put into your graveyard from anywhere, you may pay {2} and exile it. If you do, draw two cards.

{U}, Sacrifice Imperious Nixie: Return target creature to its owner's hand.

Flying, haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Creatures your opponents control enter tapped.
Bulwark — At the beginning of each upkeep, if you control a creature with toughness 4 or greater, Danuri Custodian gains indestructible until end of turn.

Enchant creature
Enchanted creature has winnow. (Damage dealt to it also causes its controller to lose that much life.)

Aleud Scorn deals 3 damage to target creature.
At the beginning of your upkeep, you may exile Aleud Scorn from your graveyard. If you do, add {R}{R}.

Each opponent loses 1 life. Whenever you cast another spell this turn, each opponent loses 1 life.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

[+1]: Until end of turn, you may cast a creature card from your graveyard. Creature spells cast this way cost {2} less to cast.
[–2]: Each player discards a card. For each player who discarded a creature card this way, create a 2/1 black Horror creature token.
[–6]: For each player, you may put a creature card from that player's graveyard onto the battlefield under your control.

{T}: Add {C}.
{T}, Pay 1 life: Add {G}.
{6}{G}, {T}, Sacrifice Ecological Refuge: Create two 3/3 green Wurm creature tokens. Activate only as a sorcery.

Vigilance
{4}{G}{G}, {T}: Other creatures you control get +2/+2 until end of turn.

Enchant opponent
When Curse of Bleeding enters, enchanted player loses 2 life.
Enchanted player can't gain life.

Draw three cards, then manifest a card from your hand. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Whenever a creature you control phases in, it gets +2/+2 until end of turn.

Exile target nonland permanent. You lose 3 life.

Draw three cards. (Then exile this card. You may cast the creature later from exile.)

Whenever you cast a noncreature spell, Prowling Frost-Tiger gets +1/+1 and gains hexproof until end of turn.

Once each turn, when a creature card is put into your graveyard from anywhere, create a 1/1 blue and black Bird creature token with flying and “When this creature deals combat damage to a player, sacrifice it. If you do, draw a card.”
Whenever three or more creatures you control deal combat damage to a player, that player loses 1 life for each card in your hand.

Scry 2 if a player lost life this turn. You draw two cards and you lose 2 life.

Fleshweaver's Domain enters tapped.
{T}: Add {G}.

Enchant creature
Enchanted creature gets +2/+0.
{2}{B}, Exile Hold Me Down from your graveyard: Return target creature card from your graveyard to your hand.

Palace Hall enters tapped.
When Palace Hall enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {G} or {W}.

Whenever Merchant of Flesh or another creature you control dies, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
{B}, Sacrifice two Treasures: Each opponent sacrifices a creature.

Whenever an Aura you control becomes attached to a creature, choose one —
• Raiding Gnoll-Band deals 3 damage to that creature.
• That creature gets +3/+0 until end of turn.

If this spell was foretold, target player creates a 4/4 red Dragon creature token with flying. Apex's Prey deals damage equal to the greatest power among creatures you control to up to one target creature or planeswalker.
Foretell {1}{R}{R}{G} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Augmented — At the beginning of combat on your turn, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on Second Wave Explorer.