First strike
Whenever Emgaran Duelist deals combat damage to an opponent, crystallize.

When Smirk enters, add the top two cards of your library to your evil plan.
Whenever you cast your second spell each turn, you draw a card and you lose 2 life.

Whenever Merciless Shieldbreaker enters or attacks, target opponent puts three rust counters on a permanent they control with no rust counters on it. That permanent gains “At the beginning of your upkeep, remove a rust counter from this permanent. Then if there are no rust counters on this permanent, sacrifice it and it deals 4 damage to you.”

Flying
Whenever Rivha and at least two other creatures attack, exile all other attacking creatures you control. For each creature exiled this way, create a 3/3 white Angel creature token with flying that's tapped and attacking.

Flash
Flying
When Justiciar Overseer enters, the next 2 damage that a source of your choice would deal to you and/or permanents you control this turn is dealt to any target instead.

Equipped creature has haste and ward {2}.
Equip {0}

Flash
Prowess
When Ella enters, create two 1/1 blue Wizard creature tokens with prowess.
Whenever you cast a noncreature spell, you may sacrifice a creature. If you do, copy that spell. You may choose new targets for the copy.

If combat damage would be dealt to Skarn, the Bloodless, prevent that damage and mill that many cards instead.
{1}{B}, Exile four cards from your graveyard: Each opponent loses 2 life and you gain 2 life.

When Vibrant Vengeance enters, all creatures get -2/-2 until end of turn.
Whenever you tap a land for mana, add one mana of any type that land produced.

Flash
When Primordial of Emila Glade enters, return up to two instant and/or sorcery cards from your graveyard to your hand.
Once each turn, you may pay {U} rather than pay the mana cost for an instant or sorcery spell.

Flash
Multitude {4}{U}{U}
You may have Wildkin Imposter enter as a copy of any creature on the battlefield.

When Necrotic Savant enters, return target creature card from your graveyard to the battlefield if it has mana value 3 or less or if Necrotic Savant escaped.
Escape—{5}{B}{B}, Sacrifice two permanents, Exile five other cards from your graveyard.

{X}: Symbol of the Revolution dares X. X can't be 0.
As long as Symbol of the Revolution is a Rebel, it has flying, lifelink, and vigilance.

First strike, vigilance
Whenever Unburnt Maiden enters or attacks, you may have it dare X, where X is the number of creatures you control. If you don't, create a 1/1 white Warrior creature token.

At the beginning of each opponent's upkeep, that player may pay life equal to the number of pain counters they have plus 1. If they don't, look at their hand, choose a card from it, and exile that card. If they do, that player gets a pain counter.
You may cast cards exiled with Alehana, and mana of any type can be spent to cast them.

Whenever you draw a card, each opponent loses 1 life and you gain 1 life.
{T}: Each player draws a card.
{2}, {T}: Draw a card.

Flying
Drop — When Sphinx of the Soundveins enters, if you didn't cast any creature spells during your last turn, untap up to three lands.

Tenacious Snapvines enters with X +1/+1 counters and your choice of up to X different counters from among deathtouch, lifelink, vigilance, trample, menace, reach or ward {2} on it.
If damage would be dealt to Tenacious Snapvines, remove a +1/+1 counter and another kind of counter from it. If you do, prevent that damage.

Flying
Whenever Irrlicht deals combat damage to a player, they reveal their hand and you choose a nonland card from it. Exile that card until your next turn.

Whenever Music Master attacks, you may pay {U}. If you do, put a curio counter on another target creature you control.
{1}{U}: Target creature gains flying until end of turn.

Look at the top seven cards of your library. You may put an artifact card, a creature card, an enchantment card, a land card, and/or a planeswalker card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Wildcourt Seeker's power and toughness are each equal to the number of land types among lands you control.
Whenever Wildcourt Seeker enters or attacks, put up to one target land card from your graveyard onto the battlefield under your control.

Multitude {4}{W}{W}
When Drift Off enters, exile target nonland permanent you don't control until Drift Off leaves the battlefield.

Moresso, Infuser of Light is all colors.
Hexproof from monocolored
Whenever you cast a spell with four or more mana symbols in its mana cost, add four mana of different colors. This ability triggers only once each turn.

Whenever you amp it up, target creature gets +1/+1 until end of turn. If this is the second time this ability has resolved this turn, put a +1/+1 counter on that creature instead.