Argivian Phalanx

This spell costs {1} less to cast for each creature you control.
Vigilance

Prayer of Binding

Flash
When Prayer of Binding enters the battlefield, exile up to one target nonland permanent an opponent controls until Prayer of Binding leaves the battlefield. You gain 2 life.

Molten Monstrosity

This spell costs {X} less to cast, where X is the greatest power among creatures you control.
Trample

Lightning Strike

Lightning Strike deals 3 damage to any target.

Archangel of Wrath

Kicker {B} and/or {R} (You may pay an additional {B} and/or {R} as you cast this spell.)
Flying, lifelink
When Archangel of Wrath enters the battlefield, if it was kicked, it deals 2 damage to any target.
When Archangel of Wrath enters the battlefield, if it was kicked twice, it deals 2 damage to any target.

Furious Bellow

Target creature gets +3/+0 and gains first strike until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

The Elder Dragon War

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)
I — The Elder Dragon War deals 2 damage to each creature and each opponent.
II — Discard any number of cards, then draw that many cards.
III — Create a 4/4 red Dragon creature token with flying.

Squee, Dubious Monarch

Haste
Whenever Squee, Dubious Monarch attacks, create a 1/1 red Goblin creature token that's tapped and attacking.
You may cast Squee, Dubious Monarch from your graveyard by paying {3}{R} and exiling four other cards from your graveyard rather than paying its mana cost.

Mountain

Molten Tributary

({T}: Add {U} or {R}.)
Molten Tributary enters the battlefield tapped.

Stall for Time

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Tap up to two target creatures. If this spell was kicked, put a stun counter on each of those creatures. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Draw a card.

Griffin Protector

Flying
Whenever another creature enters the battlefield under your control, Griffin Protector gets +1/+1 until end of turn.

Idyllic Beachfront

({T}: Add {W} or {U}.)
Idyllic Beachfront enters the battlefield tapped.

Ghitu Amplifier

Kicker {2}{U} (You may pay an additional {2}{U} as you cast this spell.)
When Ghitu Amplifier enters the battlefield, if it was kicked, return target creature an opponent controls to its owner's hand.
Whenever you cast an instant or sorcery spell, Ghitu Amplifier gets +2/+0 until end of turn.

Jaya's Firenado

Jaya's Firenado deals 5 damage to target creature or planeswalker. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flowstone Kavu

Menace (This creature can't be blocked except by two or more creatures.)
{R}: Flowstone Kavu gets +1/-1 until end of turn.

Knight of Dawn's Light

First strike
If you would gain life, you gain that much life plus 1 instead.
{1}{W}: Knight of Dawn's Light gets +1/+1 until end of turn.

Meria's Outrider

Reach
Domain — When Meria's Outrider enters the battlefield, it deals damage to each opponent equal to the number of basic land types among lands you control.

Plains

Baird, Argivian Recruiter

At the beginning of your end step, if you control a creature with power greater than its base power, create a 1/1 white Soldier creature token.

Captain's Call

Create three 1/1 white Soldier creature tokens.

Hammerhand

Enchant creature
When Hammerhand enters the battlefield, target creature can't block this turn.
Enchanted creature gets +1/+1 and has haste.

Keldon Strike Team

Kicker {1}{W} (You may pay an additional {1}{W} as you cast this spell.)
When Keldon Strike Team enters the battlefield, if it was kicked, create two 1/1 white Soldier creature tokens.
As long as Keldon Strike Team entered the battlefield this turn, creatures you control have haste.

Samite Herbalist

Whenever Samite Herbalist becomes tapped, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)