msem-instigator

Sacrifice Caravan Merchant: Add {R}{R}.

Whenever you gain life, Clerics you control get +1/+1 and gain trample until end of turn.

This spell costs {1} less to cast for each creature card in your graveyard.
Trample

Flash
When Cast Out enters the battlefield, exile target nonland permanent an opponent controls until Cast Out leaves the battlefield.
Cycling {W} ({W}, Discard this card: Draw a card.)

Reveal cards from the top of your library until you reveal a card with a lesser mana value than the previous card, then put all cards revealed this way into your hand.

Casualty of War deals 4 damage to target creature or planeswalker.
{2}{R}{R}, Exile Casualty of War from your graveyard: Arm up to two target creatures you control. Activate only as a sorcery. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Flying, haste
When Cataclysmic Skytyrant enters the battlefield, sacrifice all other non-Dragon creatures you control. For each creature sacrificed this way, create a 3/3 red Dragon creature token with flying.

Creatures you control get +X/+X and gain trample until end of turn.

As an additional cost to cast this spell, discard two cards.
Draw three cards.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
{1}{B}: You gain 1 life.

Bleed {1}{B}{B} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
All creatures get -4/-4 until end of turn.

First strike (This creature deals combat damage before creatures without first strike.)
Whenever Cauldish Warmonger attacks, create a 1/1 white Soldier creature token that's tapped and attacking.

Haste
Caulte Axeslinger gets +2/+2 as long as any opponent lost exactly 3 life this turn.

Caustic Mangrove enters the battlefield tapped.
{T}: Add {B} or {G}.
{1}, {T}: Add one mana of any color.

Look at the top three cards of your library. Put one into your hand and the rest into your graveyard. You lose 1 life.

Flash
Return another artifact, creature, or enchantment you control to its owner's hand: Caylin Whirlwind gets +3/+3 until end of turn. Activate only once each turn.

Whenever a creature enters the battlefield, if it entered from a graveyard or a player cast it from a graveyard, return Ceaseless Stalker from your graveyard to the battlefield at the beginning of the next end step.

Counter target activated or triggered ability of a nonland source. If an ability of a creature, enchantment, or planeswalker is countered this way, exile it.

Whenever you cast a spell, if it isn't your main phase, create a 1/1 white Monk creature token, then creatures you control get +1/+1 until end of turn.

Flying
When Cerulean Sovereign enters the battlefield, you may return target creature an opponent controls or instant or sorcery card in your graveyard to its owner's hand.

When Chamber of Reflections enters the battlefield, draw a card, then choose a legendary card name.
Permanents you control with the chosen name have hexproof and the “legend rule” doesn't apply to them.

Chamber of Splendor enters the battlefield tapped.
When Chamber of Splendor enters the battlefield, you may pay {1}. If you do, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
{T}: Add {C}.

Vigilance
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 Champion of Destinies becomes renowned, you become the monarch.

First strike, haste
Wanderlust — At the beginning of combat on each of your turns, if you control four or more differently named lands, you may pay {1}{R}. If you do, create a 4/4 red Dragon creature token with flying and haste. Exile that token at end of combat.

Flash
Flying
When Champion of the Provinces enters the battlefield, return any number of other permanents you control to their owner's hands.