msem-instigator

Other creatures have haste and attack each combat if able.
Nonland cards in your hand have paranoia {4}. (The owner of a card with paranoia {4} may cast it from their hand for {4} when a permanent they control leaves the battlefield.)

Whenever another creature you control dies, put a +1/+1 counter on Ruthless Weichafe and you lose 1 life.
Whenever Ruthless Weichafe attacks, if its power is 4 or greater, it gains lifelink until end of turn.

Prowess
When Tuesday's First Victim dies, audition for blue. (Create a 1/1 Construct Actor creature token, a Wizard Role giving 2/2 and prowess, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)

Mossvine Lurker has trample as long as it has a +1/+1 counter on it.

When Goblin Sniper dies, you may pay {R}. If you do, it deals 2 damage to target opponent or planeswalker.

Prevent all combat damage that would be dealt to Silent Reaver.
Prevent all combat damage Silent Reaver would deal to creatures.

First strike
Engage (This creature must be blocked each combat if able.)

[+2]: Each player can cast only one more spell until your next turn.
[–3]: Exile all other permanents, then return them to the battlefield tapped under their owner's control. Creatures can't attack you or planeswalkers you control until your next turn.
[–8]: Return all permanent cards from your graveyard to the battlefield tapped.

As Secluded Courtyard enters, choose a creature type.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature source of the chosen type.

Choose one —
• Destroy target creature with flying.
• Destroy target artifact.

Eradicating Flames deals X damage to each creature and each player. If X is 5 or more, Eradicating Flames can't be countered and the damage can't be prevented.

Search your library for a land card, put it onto the battlefield tapped, then shuffle.
Coalesce {5}{G}{G} (You may cast this from your graveyard for {5}{G}{G}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)
Beyond All Horizons's power and toughness are each equal to the number of lands you
control.

Whenever this creature attacks, up to two target Citizens or Peasants each get +1/+0 and gain trample until end of turn.

Put target spell on top of its owner's library.
Each player conjures a card named Fatigue and puts it on top of their library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Whenever you gain life, each opponent loses 1 life.

Wild Ravine enters tapped unless you control two or more red and/or green permanents.
{T}: Add {R} or {G}.

During your opponents' turns, Chroma, the Faerie Circle has all basic land types in all zones.
Chroma, the Faerie Circle enters tapped.

Lifelink
{W}{B}, {T}, Discard a card: Look at the top three cards of your library. You may reveal an enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
When you have no cards in hand, exile Revela, then return her to the battlefield transformed under her owner's control.

{T}: Add {C}.
{T}, Exile two cards from your graveyard: Add {G} or {W}.

When this creature enters, put two -1/-1 counters on a creature you control.
When you put one or more -1/-1 counters on one or more creatures, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Target creature gets -3/-3 until end of turn. You gain 3 life. (Then exile this card. You may cast the creature later from exile.)

Whenever a creature you control deals combat damage to a player, you may sacrifice it. If you do, draw cards equal to that creature's power.

Whenever Ram Wrangler attacks, until end of turn, gain control of target creature defending player controls with power less than or equal to the number of creatures in Ram Wrangler's pack. Tap it. It's attacking defending player. (Two or more creatures you control with equal power are in a pack.)

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Flying, deathtouch
Whenever you cast an instant or sorcery spell, return target creature card from your graveyard to the battlefield.