msem-instigator

I, II — Each opponent loses 2 life and you gain 2 life.
Discovery — At the beginning of your end step, you draw a card and you lose 2 life.

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.)

Draw two cards. If you have no cards in hand and there are no cards in your graveyard, draw seven cards instead.

Flying
{2}{U}: Switch target creature's power and toughness until end of turn.

When Flame Juggler dies, it deals 3 damage to each opponent.

Search your library for a creature card, reveal it, put it into your hand, then shuffle. Then if you control a creature with power 4 or greater, you may pay {4}. If you do, you may put a creature card from your hand onto the battlefield.

When Defiler of Farmsteads enters, each opponent loses 2 life and you gain 2 life.

When Onward to War enters, draw a card, then choose a card name.
Whenever one or more creatures you control with the chosen name attack, look at the top four cards of your library. Put a creature or enchantment card with mana value 3 or less from among them into your hand. Put the rest on the bottom of your library in any order.

Discard your hand, then draw two cards for each land card discarded this way. For each opponent, Marzen's Frenzy deals damage to that player or a planeswalker they control equal to twice the number of instant or sorcery cards discarded this way.

Ice Path enters tapped.
As Ice Path enters, choose a color.
You may spend {C} as though it were mana of the chosen color.
{T}: Add {C}.

Exile target land. Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Once during each of your turns, when a card is put into a graveyard from anywhere, you may cast it. You may spend mana of any color to cast that spell.
When Arroyo, Infinitely Branching is put into your graveyard from anywhere, you may cast it.

Enchant creature
Enchanted creature gets +1/+2 and has flying.

Whenever an artifact you control becomes tapped, K-17 Drone deals 1 damage to each opponent.

{T}: Add {C}.
Satrapies you control have “{1}{R}, {T}, Discard a card: Draw a card.”

Sundappled Scrub enters tapped unless you control another Desert.
{T}: Add {G} or {W}.

Flying
Aedryd, Spectral Liege's power and toughness are each equal to the number of creatures you control.
{2}{W/U}: Another target creature you control gains flying until end of turn. When that creature leaves the battlefield this turn, create a 1/1 white Spirit creature token with flying.

Whenever you cast a spell that targets, put a loyalty counter on Valeri Kripac and create a 1/1 white Soldier creature token.
[+1]: Add {R}. If you spend this mana on a spell that targets, that spell can't be countered.
[–2]: Exile target instant or sorcery card from your graveyard. You may play it until the end of your next turn. If you do, exile that spell instead of putting it anywhere else.

Enchant creature
When Heartstrings leaves the battlefield, exile enchanted creature.
Whenever enchanted creature attacks or blocks, exile it at end of combat.

Exile target nonblack creature. Its controller exiles a card at random from their hand.

Canid Simulacrum enters with each counter on it from among +1/+1, flying, first strike, deathtouch, lifelink, menace, reach, shield, trample, and vigilance. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
Whenever a creature you control enters, move two random counters from Canid Simulacrum onto that creature.

Enchant nonland permanent
Enchanted permanent's activated abilities can't be activated and triggered abilities of enchanted permanent don't trigger.

You may change the targets of target instant spell, sorcery spell, or activated ability.

For each player, exile target creature or planeswalker they control.

Look at the top six cards of your library. Put up to one land card and up to two creature and/or planeswalker cards with total mana value 5 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.