msem-instigator

Ferocious — At the beginning of each combat, if you control a creature with power 4 or greater, Worshipper Whelp gets +2/+0 until end of turn.

When this permanent transforms into Worthy Vulpine or at the beginning of combat on your turn, creatures you control gain haste and trample until end of turn.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast Aura or Aurashaper spells.

({T}: Add {B}.)
Wretched Sanctuary enters tapped with two sanctum counters on it.
{T}, Remove a sanctum counter from Wretched Sanctuary: Add {U} or {R}.

Whenever a nontoken creature you control enters, if it wasn't cast, put a +1/+1 counter on Wretched Skulker.
{3}{W}, Sacrifice Wretched Skulker: Exile target nonland permanent with mana value less than Wretched Skulker's power.

Ferocious — Whenever a creature with power 4 or greater you control enters, untap all lands you control.

Equipped creature gets +1/-1 and has “When this creature dies, put a fate counter on Xueyang San.”
{1}, Remove a fate counter from Xueyang San: Choose one —
• Draw a card.
• Xueyang San deals 2 damage to any target and you gain 2 life.
Equip {1}

{T}, Sacrifice another creature: Return target creature card with mana value equal to 1 plus the sacrificed creature's mana value from your graveyard to the battlefield. Activate only as a sorcery.

{4}, {T}, Sacrifice Yenzu Ritual Vessel: Yenzu Ritual Vessel deals 4 damage to target creature or planeswalker.

Yi Cang, Thief of Blessings enters with a +1/+1 counter on them.
{1}: Yi Cang becomes a copy of target creature in their pack, except their name is Yi Cang, Thief of Blessings, they're legendary in addition to their other types, and they have this ability. (Two or more creatures you control with equal power are in a pack.)

Vigilance
{X}{G}, {T}: Ylda, the Wild Soul becomes a copy of target creature you control with mana value X, except it has this ability and vigilance. Activate only as a sorcery.

Target creature gains haste and trample until end of turn.
Fabled {3}{R/G}{R/G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Soldiercycling {2}{W} ({2}{W}, Discard this card: Search your library for a Soldier card, reveal it, and put it into your hand, then shuffle.)

Whenever Yri, the Daring Blade and exactly one other creature attack, Yri and that creature can't be blocked by creatures with mana value 3 or less this turn.

{2}{B}, Sacrifice a Clue: Target creature gets -3/-3 until end of turn.

{T}: Add {C}.
{T}, Sacrifice a creature: Add one mana of any color.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{G}: Zen Ascendant becomes a copy of a creature token you control until end of turn. (It's not a token.)

Equipped creature gets +1/+1 and has flying.
Equip {2}

When Zhedina Exchange enters, choose a basic land type.
Basic lands you control of the chosen type have “{T}: Add one mana of any color.”
{T}: Add {C}.

{3}, Reveal Zhedina Outskirts from your hand: Put Zhedina Outskirts from your hand onto the battlefield tapped.
{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
{T}: Add {C}.
{1}, {T}: Scry 1.

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
Menace
{2}{B}: Demigod — Surveil 2. Each opponent loses 2 life and you gain 2 life.
{4}{B}: God — Search your library for two cards with different names and reveal them. An opponent chooses one. Put the chosen card into your graveyard and the rest into your hand. Then shuffle.

Haste
When Zipping Zapper enters, target creature gains haste and first strike until end of turn.

Target creature gets -2/-0 until end of turn. If that creature is tapped, draw a card.

Search your library for a Spirit card, exile it, then shuffle. You may cast that card this turn.