msem-instigator

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.

Flying
When Celebrant of Jubilation enters the battlefield, untap all creatures you control.
Cycling {2} ({2}, Discard this card: Draw a card.)

Your opponents skip their upkeep steps.
At the beginning of your first upkeep each turn, you get an additional upkeep step after this step.

As long as Champion of Ideals has one or more +1/+1 counters on it, it's an Angel with base power and toughness 4/4, flying, vigilance, and lifelink.
{3}{G}: Judge target creature you control. Activate only as a sorcery. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

Whenever you cast a noncreature spell, if you control exactly one creature, copy that spell. You may choose new targets for the copies. (If it's a permanent, it resolves as a token.)

[+1]: Return up to one target Aura card from a graveyard or on the battlefield to its owner's hand.
[–2]: Sacrifice an enchantment. If you do, return target enchantment card from your graveyard to the battlefield.
[–6]: Draw three cards. Until end of turn, you may cast enchantment spells without paying their mana costs.

Flash
Flying, lifelink, deathtouch
When Chosen of Aminatou enters the battlefield, scry 2, then draw a card.

Flying, prowess
When Chronosphere Sovereign enters the battlefield, nonbasic permanents target opponent controls don't untap during their controller's next untap step.
When Chronosphere Sovereign dies, it deals 3 damage to each tapped creature you don't control. Destroy each tapped artifact you don't control.

Flying
{U}: Put Cloud Sovereign on top of its owner's library.
Foresee — As you draw Cloud Sovereign, you may reveal it and pay {1}{W}. When you do, create a 1/1 white Bird creature token with flying.

When Conflux Ravager enters the battlefield, destroy target nonland permanent an opponent controls.
Cycling {2} ({2}, Discard this card: Draw a card.)

Constructed Jay is all colors.
Constructed Jay gets +1/+0 and has flying as long as you control three or more Satrapies.

Scry 2, then draw two cards. You gain 2 life.
Monument {2}{W}{U} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

When Coralight Paladin enters the battlefield, you may search your library for an artifact card, reveal it, then shuffle and put that card on top.
Concord — Whenever Coralight Paladin attacks, if there are four or more card types among permanents you control, Merfolk you control get +1/+1 until end of turn.

You may reveal any number of creature cards you own from outside the game with the same name and put them into your hand. Exile Cosmic Lineage.

When Cou Ling enters the battlefield, create two 2/1 red and white Fox creature tokens.
Whenever a Fox you control deals combat damage to a player, draw a card, then you may cast an instant or sorcery card with mana value less than or equal to the damage dealt from your hand without paying its mana cost.

Reveal the top five cards of your library. For each card type, you may put a card of that type revealed this way into your hand. Put the rest into your graveyard. Then you may cast a nonland card with mana value 3 or less from your hand without paying its mana cost.

You gain 2 life and draw two cards.

Flying
Sacrifice Crystalcatcher: Counter target creature spell unless its controller pays {1}.

Creature spells you cast cost {2} less to cast.
Whenever another nontoken creature enters the battlefield under your control, it becomes a colorless Vehicle artifact with crew 1. (Tap any number of creatures you control with total power 1 or greater: That Vehicle becomes an artifact creature until end of turn.)

As Damian, the Boss enters the battlefield, pay up to 5 life. He enters the battlefield with that many additional loyalty counters.
[–X]: You gain X plus 3 life.
[–1]: You draw a card and each opponent discards a card.
[–4]: Destroy up to one target creature. Create a 3/3 green Mole creature token.

First strike
Noncreature spells cost {1} more to cast as long as their controller is horrific. (A player is horrific as long as they've sacrificed a permanent or discarded a card this turn.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Whenever you cast an enchantment spell, draw a card.
II — Tap up to one target nonland permanent and put a stun counter on it. You gain 2 life.
III — Target creature you control gets +1/+1 until end of turn for each enchantment you control.

When Dance of Steel and Song enters the battlefield, rouse 2. (Distribute two +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)
Artifact creatures and enchantment creatures you control get +1/+1.

Creatures with power greater than Dashing Rogue's power can't block it.

Put all attacking creatures on top of their owners' libraries.