msem-instigator

Prowess
At the beginning of each end step, if you cast a multicolor spell or two spells with different colors this turn, each opponent sacrifices a permanent.

Whenever this creature enters or attacks, create a 2/1 white Soldier creature token. Exile up to one target nonland permanent with mana value 3 or less an opponent controls until that token leaves the battlefield.
Other permanents you control have ward {1}.

Abandoned Den enters tapped.
{T}: Add {B}.
{B}, {T}: Target player loses 1 life. Activate only as a sorcery and only if you control a black creature.

This spell can't be countered.
Polis's Demise deals 5 damage to each creature. Destroy all artifacts.

Lifelink
{1}{G}{U}: Put a +1/+1 counter on Advocate of Ideals. Until end of turn, it becomes an Angel in addition to its other types and gains flying and vigilance.

Heat Ray deals X damage to target creature.

When Verdant Curtain Mascot enters, choose one —
• You gain 2 life.
• Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

[+2]: Put a -1/-1 counter on or remove a -1/-1 counter from up to one target creature.
[–1]: Draw a card, then each player sacrifices a nonland permanent.
[–10]: Destroy all nonland permanents you don't control.

{1}{R}: Aravant Throatcutter and up to one other target Pirate or Rogue you control each get +1/+0 until end of turn.

When Legacy Warmask enters, return target creature card with mana value 2 or less from your graveyard to the battlefield, then attach Legacy Warmask to that creature.
Equipped creature gets +1/+1.
Equip {1}

Flying
When Nizev Arbiter enters, judge another target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Each player discards a card or sacrifices a creature.
III — Each opponent loses life equal to the number of creature cards in their graveyard. You gain life equal to the number of creature cards in your graveyard.

Abound. Then search your library for a creature, instant, or sorcery card, reveal it, put it into your hand, then shuffle. (To abound, you may cast a spell that costs less than this from your hand without paying its mana cost.)

Menace
{1}{B}{R}: Creatures you control get +1/+0 until end of turn.

Amid Flames deals 5 damage to target creature or planeswalker.
You may sacrifice a land. If you do, draw a card.

Target creature gets +2/+1 and gains haste until end of turn.
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.)

As an additional cost to cast this spell, discard a land card.
Draw two cards.

Ammbradu Parasite gets +1/+1 as long as you control a Forest.
{4}{G}: Target creature must be blocked this turn if able.

Flying
Whenever Hao'Tai deals combat damage to a player, that player exiles the top five cards of their library and separates them into two piles. Put an ember counter on each card in the pile of your choice. You may play cards from exile with ember counters for as long as they remain exiled.

Choose one —
• Target creature you control gets +1/+1 until end of turn if it's enchanted. Then it fights target creature you don't control.
• Destroy target enchantment.

Return target nonland permanent to its owner's hand. If you control an Elemental, draw a card.

At the beginning of your end step, create an X/X colorless Construct artifact creature token, where X is the number of artifacts that were put into your graveyard from the battlefield this turn.

This spell costs {1} less to cast for each foretold card you own in exile, each permanent you control with foretell, and each card with foretell in your graveyard.
Flying
When Tyrant of Prophecies enters, it deals 3 damage to any target.

Destroy each artifact with mana value X or less, then create an Idol token for each artifact destroyed this way. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Each land you sacrifice while casting Frostfire Hulk pays for {1}.
Frostfire Hulk enters with a +1/+1 counter for each land card in your graveyard.
Sacrifice Frostfire Hulk: It deals X damage to target creature or planeswalker, where X is the number of +1/+1 counters that were on it. Activate only as a sorcery.