msem-instigator

Flying
Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
If Chronowing Phoenix would die while it had no time counters on it, instead exile it, then return it to the battlefield.

Death knell — Add {G}. (As a creature you control dies, trigger one death knell of that creature or another permanent you control.)
{W}{B}{G}: Trigger a death knell of target permanent you control.

{2/R}{2/R}: Churning Rough-Roller gets +1/+1 and gains double strike until end of turn.

When Churning Sandwurms enters, remove all counters from target permanent. Put a +1/+1 counter on Churning Sandwurms for each counter removed this way.

When Churning Spellroot enters, create three 1/1 black Worm creature tokens.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Cinder Arrows deals 3 damage to target creature.

Trample
Whenever a player casts a spell, Cinderhoof Minotaur deals 1 damage to that player.
Whenever Cinderhoof Minotaur attacks, add {R}. Until end of turn, you don't lose this mana as steps and phases end.

Each player discards their hand and sacrifices five lands. Cinders of an Old Era deals 5 damage to each creature and planeswalker.
At the beginning of each player's next first main phase, that player draws seven cards and adds five mana in any combination of colors.

Circling Predators deals X damage to each creature, where X is 2 plus the number of cards with a cycling ability in your graveyard.
Cycling {2} ({2}, Discard this card: Draw a card.)

Flying
Whenever Circumspect Flock perseveres, create a 1/1 white Bird creature token with flying. (A creature perseveres when it survives damage.)

{1}{R}: Circus Firebreather gets +1/+0 until end of turn.

Citadel Bagworm gets +0/+1 for each card in your graveyard.
{B}, Discard a card: Switch Citadel Bagworm's power and toughness until end of turn.

{3}{G}: Search your library and/or graveyard for an Aura card, reveal it, and put it into your hand. If you search your library this way, shuffle.
{1}{U}: Untap target creature.

As Citadel Gates enters, you may pay 3 life. If you don't, it enters tapped.
{T}: Add {B}, {R}, or {G}.

{T}: Add {C}.
{3}, {T}, Sacrifice City Gate: Put two +1/+1 counters on target creature you control that attacked this turn.

Target creature attacks or blocks this turn if able.
Forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

Search your library for a basic land card and put that card onto the battlefield, then shuffle.
{5}{G}{W}, Exile Claim for Civilization from your graveyard: Create a 6/6 colorless Golem artifact creature token. Activate only as a sorcery.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Target creature's owner puts it on the top or bottom of their library.
3 | Return a creature card from your graveyard to your hand.

Draw two cards.
Cycling {2} ({2}, Discard this card: Draw a card.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

When Clairvoyant Mage enters, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Whenever another creature you control enters, you gain 1 life.
{4}{W}: Return another target creature you control to its owner's hand.

Armed — Other Goblin creatures you control get +1/+1 and have haste as long as Clanleader of Beragnos is equipped.

Haste
Claret Gorger can't block.
Unveil {2}{B}{R} ({2}{B}{R}: Transform this. Unveil only as a sorcery.)