msem-instigator

Discard a card: Ha'Eng gains deathtouch until end of turn.
Inspired — Whenever Ha'Eng becomes untapped, look at the top card of your library and exile it face down. Then you may pay 3 life. If you do, put all cards you own exiled with Ha'Eng into your hand.

Search your library for up to two land cards with basic land types, put them onto the battlefield, then shuffle. Sacrifice two lands at the beginning of the next end step.

{T}, Pay 1 life: Add {B} or {G}.
{2}, {T}, Sacrifice Walled Garden and another permanent: Draw a card. Activate only during your turn.

When Crinster Tattooist enters, put a +1/+1 counter on each tapped creature you control.

When Amira, Grand Inventor enters, create a 1/1 colorless Construct Artificer artifact creature token. If you control six or more artifacts, create a 6/6 colorless Golem artifact creature token instead.
Artifact tokens you control have all activated abilities of other artifact tokens you control.

Return target permanent to its owner's hand. You may put a permanent card that shares a card type with it from your hand onto the battlefield.

Other creatures you control get +2/+0.
Creatures your opponents control get -1/-1.
Fleeting {2}{B} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

Flying
When Byte Bug enters, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

Furious Blow deals 4 damage to any target.
{2}{R}, Exile Furious Blow from your graveyard: Search your library for an Ameret planeswalker card or a card named The Lost and Seeking, reveal it, put it into your hand, then shuffle.

Flying
When Emissary of the Wicked enters, you lose 4 life.
Revive {2}{B}{B} ({2}{B}{B}, 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.)

Create three 1/1 red Human creature tokens with haste. Sacrifice those tokens at the beginning of the next end step.
Draw a card.

When Graygulch Drifter enters, return target creature card from your graveyard to your hand. If that card is a Spirit, you may return an additional Spirit card from your graveyard to your hand.

Siege Ent can't be blocked by creatures with power 2 or less as long as it's embattled. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

When Dragon-Forged Armor enters, exile a creature card from a graveyard.
Equipped creature gets +X/+Y, where X is the power of the last creature card exiled with Dragon-Forged Armor and Y is its toughness.
Equip {2}

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{2}{W}: Create a 1/1 white Human Samurai creature token.

Enchant player
When Curse of the Vein enters, create a 1/1 black and red Vampire creature token with menace.
Whenever enchanted player is attacked, Curse of the Vein deals 1 damage to them.

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.

Flying
Whenever Judge of Mahara or another creature you control leaves the battlefield, you gain 2 life.

Target creature gains trample until end of turn. The next time a source of your choice would deal damage to that creature, prevent that damage. If damage is prevented this way, that creature gets +X/+0 until end of turn, where X is the amount of damage prevented this way.

Flying, vigilance
When Guardian Grotesque dies, return up to one target nonland permanent to its owner's hand.
Foreshadow {6} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

Flash
When Scholar of Necromancy enters, if a creature died this turn, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

[+1]: Tanya, the Mooncursed becomes a legendary 3/1 red Werewolf creature with first strike until end of turn.
[–2]: Tanya, the Mooncursed deals 3 damage to target creature or planeswalker.
[–4]: Destroy target nonbasic colorless permanent.

Equipped creature has “{1}, {T}: This creature deals 1 damage to any target.”
Whenever equipped creature deals damage to a creature with power 5 or greater, sacrifice Sling of the Meek. If you do, destroy that creature.
Equip {3}

{2}, {T}: Target opponent exiles a nonland, nontoken permanent they control.
{2}, {T}: Put target permanent card exiled with Harmony Array onto the battlefield under your control.

Whenever a nonland permanent enters under an opponent's control this turn, gain control of that permanent until the end of your next turn. It gains haste until end of turn.