msem-instigator

When Endmire Scourer dies, search your library for a card with mana value 4 or less, reveal it, put it into your hand, then shuffle.

Each player sacrifices a creature with the highest power among creatures they control and a creature with the lowest power among creatures they control.

When this artifact enters, you gain 3 life. Surveil 2.
{T}: Add one mana of any color.

{R}: Draconic Aspirant gets +1/-1 until end of turn.

{T}: Add {C}.
{1}, {T}: Add {G}{U}.

Whenever another artifact you control enters, put a +1/+1 counter on Lightsteel Enforcer.

Starting with you, each player may put a permanent card from their hand onto the battlefield. Then each player may choose a noncreature, nonland permanent. Destroy those permanents.

Trample
{2}{R}: Santriza Arsonist gets +3/+0 until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)
When Achet-Aton, Living God enters, if your life total is less than 5, your life total becomes 5.
As long as you have 5 or more life, damage that would reduce your life total to less than 5 reduces it to 5 instead.

[+2]: Until end of turn, Helene Trant becomes a 4/4 Human Warrior creature with hexproof and trample that's still a planeswalker. Prevent all damage that would be dealt to her this turn.
[–2]: Draw two cards.
[–4]: You get an emblem with “Whenever one or more creatures you control deal combat damage to a player, draw a card.”

{T}: Add one mana of any color.
{T}, Sacrifice Unicorn of the Vale: Add three mana of any one color.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
Slums Thug gets +1/+1 and has menace as long as you've gained life this turn.

Put two -1/-1 counters on target creature.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Exile the top two cards of your library. Until end of turn, you may play those cards. Add {R} for each creature card exiled this way.

Exile up to one target nonland card from an opponent's graveyard. Copy it. You may cast the copy. (You still pay its costs, including color. Copies of permanents enter as tokens.)
Draw a card.

Creatures you control gain lifelink until end of turn.

Sacrifice a creature: Look at the top card of target player's library. You may have that player put that card into their graveyard.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

When Fabled Chishou enters, create a token that's a copy of it, except it doesn't have this ability.
At the beginning of each end step, if Fabled Chishou isn't in a pack, sacrifice it. (Two or more creatures you control with equal power are in a pack.)

Flash
Enchant creature
When Aegis Expertise enters, untap enchanted creature.
Enchanted creature gets +0/+3.

Flame Jolt deals 2 damage to target creature and 1 damage to target player or planeswalker.

You can't lose the game this turn and your opponents can't win the game this turn. At the beginning of the next end step, your life total becomes 5.

Double strike
The first spell you cast during each of your turns costs {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.

Draw two cards. Each opponent draws a card.