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 cast a spell that targets Anvilwrought Lion, creatures you control get +1/+0 until end of turn.

Untap target creature. It gets +2/+2 and gains indestructible until end of turn.

Temple of Epiphany enters the battlefield tapped.
When Temple of Epiphany enters the battlefield, scry 1.
{T}: Add {U} or {R}.

When Harvesting Blade enters the battlefield, target opponent exiles two cards from their hand.
Equipped creature gets +2/+1 and has “When this creature dies, you may cast a card exiled with Harvesting Blade with equal or lesser mana value without paying its mana cost.”
Equip {3}

Return target creature to its owner's hand. If you've cast another instant or sorcery spell this turn, draw a card.

Indulgence
Whenever you indulge, put a +1/+1 counter on target creature you control.

Aethersteel Pouncer enters with a haste counter on it.

Put a defender counter on each creature.

Whenever you cast a spell that targets Rathomar Herder, choose one. If Rathomar Herder is attacking, you may choose both instead.
• Create a 1/1 white Human creature token.
• Creatures you control get +1/+0 until end of turn.

When Stehlian Reverend enters, put a +1/+1 counter on target creature.
Cybersoul {4}{W}

When The Love of a Lifetime enters the battlefield, you may search your library for a legendary creature card that doesn't share a name with a creature you control, reveal it, put it into your hand, then shuffle.
Creatures you control get +1/+1.

As Top of the Charts enters the battlefield, choose a mana value.
Creatures with the chosen mana value get +1/+1. All other creatures get -1/-1.

Burn Rubber deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn.

Prowess
When Gravefire Arcanist enters the battlefield, when you cast your next instant or sorcery spell this turn, copy it. You may choose new targets for the copy.
Escape—{1}{R}{R}, Exile six other cards from your graveyard.

As New Divide enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{T}, Sacrifice New Divide: Search your library for a basic land card, put it onto the battlefield, then shuffle.

Exile the top three cards of your library. You may play up to two of those cards this turn.

Valley Village enters tapped.
{T}: Add {R} or {G}.
{1}, Discard Valley Village: Scry 2.

When Attuned District enters the battlefield, scry 2.
Whenever you scry, you may pay {1}. If you do, create a 0/0 colorless Construct artifact creature token, then put X +1/+1 counters on it, where X is the number of cards you looked at.

At the beginning of combat on your turn, you may pay {1}. If you do, create a 1/1 red and green Elemental creature token. It gains haste. Sacrifice it at end of combat.

When Pensive Caldera enters the battlefield, you may discard a card. If you do, draw a card.
{T}: Add {R}. Spend this mana only to cast artifact, instant, or sorcery spells.

Menace
Discard a card, Sacrifice Rose Court Supplicant: Draw a card.

When Primal Pathbreaker enters the battlefield, search your library for a basic land card, put it onto the battlefield, then shuffle. Then if you control eight or more lands, that land becomes a 4/4 green Elemental creature. It's still a land.

Flash
When Lauded Orator enters, target creature gets +0/+2 until end of turn.

Whenever Implacable Shrine-Guard attacks, for each color, do the following if your devotion to that color is three or greater.
{W} — Create a 1/1 white Human creature token.
{U} — Draw a card.
{B} — Each opponent loses 2 life.
{R} — Create a Treasure token.
{G} — You gain 3 life.