Approval — When Flock Favorites enters, exile the top X cards of your library, where X is the number of colors among permanents you control. Until the end of your next turn, you may play those cards.

{T}: Add {R}{R}{R}. Spend this mana only to cast creature spells. If that mana is spent on a creature spell, it enters with an additional haste counter and decayed counter on it.

Flying, haste
As an additional cost to cast spells with flashback, you may pay {1}{R}. When you do, return Opal-Eye Phoenix from your graveyard to the battlefield.

Whenever you amp it up, Pyrote Technician deals 2 damage to each opponent.

Menace
Whenever your Champion attacks, you may discard a card. If you do, draw a card.

Flying, haste
At the beginning of combat on your turn, if you've cast an instant or sorcery spell with mana value 4 or greater this turn, you may return Smolderwing from your graveyard to the battlefield.

Aggressor Model enters with a +1/+1 counter on it.

{VP}{VP}{VP}: Genre Blender gets +3/+3 until end of turn. Activate only once each turn.

Glowsac Webspinner enters with a reach counter on it.
When Glowsac Webspinner enters, you gain 1 life for each different kind of counter among permanents you control.

Trample
When Wallbreaker enters, put a +1/+1 counter on up to one other target creature you control with trample. If you do, you may have that creature deal damage equal to its power to target creature or planeswalker you don't control.

Whenever an enchantment you control enters, tap target noncreature permanent.

Menace
At the beginning of your end step, if you've sacrificed a permanent this turn, you may discard a card. If you do, draw a card.

Solidarity
Edgeland Battlefury must be blocked if able, and it must be blocked by two or more creatures if able.

Whenever you gain life, put a +1/+1 counter on Nourishing Orator.
{2}{G}{W}: Nourishing Orator gains lifelink until end of turn.

Flying, haste
Whenever you cast an instant or sorcery spell with mana value 4 or greater, you may return Burning Witch to its owner's hand. If you do, copy that spell. You may choose new targets for the copy.

Whenever you cast a spell that targets Zenith Marshal, create a 1/1 white Human creature token. If Zenith Marshal is attacking, that token enters tapped and attacking.
As long as Zenith Marshal is attacking, other creatures you control get +1/+0.

Flash
When Louna, the Ever-Learning enters, for each kind of counter among permanents you control, you may put a counter of that kind on Louna, the Ever-Learning.

Vigilance
Whenever you cast a spell from anywhere other than your hand, put a +1/+1 counter on Shepherd of Steel.
When Shepherd of Steel dies, put its counters on target creature you control.

When Tiril Ambassador enters, you may return target nonland card from your graveyard to your hand. You lose life equal to its mana value.
Basic landcycling {1}{U}

Flash
Flying
When Whirring Inspector enters, target player reveals their hand. You may exile a nonland card from among them until your next turn. When you don't, exile up to one target nonland permanent that player controls until your next turn.

Whenever Penrath Dispatcher attacks, you may put a creature card with mana value less than or equal to Penrath Dispatcher's power from your hand onto the battlefield tapped and attacking.
{2}: Penrath Dispatcher gets +1/+1 until end of turn.

When Brass Baker enters, create a Food token.

Flying
Lurking Gargoyle enters with your choice of counter from among deathtouch, menace or vigilance on it.

Spellcharge 2
When Vanquished Conqueror dies, draw a card.

Flying
When Alrantan Skywatch enters, create a 1/1 white Human creature token and draw a card.