msem-instigator

Flying
You may cast enchantment spells from your graveyard.
Whenever an enchantment you control enters, draw a card.

When this artifact enters, exile up to one target card from a graveyard.
{2}, {T}, Sacrifice this artifact: Exile up to one target card from a graveyard. Target player creates a tapped 2/2 black Zombie creature token.

Macabre Pools enters tapped. When it enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
{T}: Add {U} or {B}.

{4}{R}, Sacrifice Lavahurler: It deals 5 damage to target player or planeswalker.

Trample
When Shigurei, the Floodbringer enters, up to three target permanents become colorless Island lands.

Equipment spells you cast cost {1} less to cast.
Equip abilities you activate cost {1} less.

Flash
When Scholar of Reflections enters, you may switch target creature's power and toughness until end of turn.

You may have Terracotta Legion enter as a copy of any creature with mana value 1 or less you control, except it's an artifact in addition to its other types.

Attacking creatures you control have trample.
Whenever a creature you control attacks, you may remove any number of +1/+1 counters from that creature. If you do, it gets +2/+2 until end of turn for each counter removed this way.

You draw X cards and you lose X life, where X is the number of cards in your hand.

As Protean Jar enters, choose a creature type.
Each creature you control of the chosen type enters with an additional +1/+1 counter on it.
{2}: If Protean Jar isn't a creature, it becomes a copy of target creature you control of the chosen type, except it has Protean Jar's other abilities. Activate only as a sorcery.

Menace
Whenever an opponent discards a card, monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

Stalwart Guardian has first strike as long as it's attacking.
Augmented — When Stalwart Guardian enters, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, create two 1/1 blue Elemental creature tokens with flying.

Cleave deals 1 damage to each opponent and 1 damage to each creature and planeswalker your opponents control.

This spell costs {2} less to cast if you control a creature with a Tale.
Draw two cards.

Other creatures you control get +1/+0.
At the beginning of combat on your turn, create a 1/1 red Human creature token with haste.

Lifelink
Revive {3}{B} ({3}{B}, 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.)

First strike
Crew 1 (Tap any number of creatures you control with total power 1 or greater: This Vehicle becomes an artifact creature until end of turn.)

Haste
When Wretched Merfolk enters, target creature can't block this turn.

Death knell — Put a trample counter on target creature you control. (As a creature you control dies, trigger one death knell of that creature or another permanent you control.)
Sacrifice a creature: Put a +1/+1 counter on Crushing Victor. Activate only as a sorcery.

Prevent all combat damage that would be dealt to and dealt by creatures this turn.

Whenever Nightrail Printer attacks, you may tap target creature.

Indestructible
Lands you control have “{T}: Add {G}{G}.”
{5}{G}{G}: Double the power and toughness of each creature you control until end of turn.

As Timber Range enters, you may pay 2 life. If you don't, Timber Range enters tapped.
{T}, Sacrifice Timber Range: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on it, then proliferate. (You choose any number of permanents and/or players with counters on them, then give each another kind of a counter already there.)
Equip {2}