Zealous Strike

Target creature gets +2/+2 and gains first strike until end of turn.

Kruin Striker

Whenever another creature you control enters, this creature gets +1/+0 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Benalish Veteran

Whenever this creature attacks, it gets +1/+1 until end of turn.

Angelic Armaments

Equipped creature gets +2/+2, has flying, and is a white Angel in addition to its other colors and types.
Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Thatcher Revolt

Create three 1/1 red Human creature tokens with haste. Sacrifice those tokens at the beginning of the next end step.

Goldnight Commander

Whenever another creature you control enters, creatures you control get +1/+1 until end of turn.

Kessig Malcontents

When this creature enters, it deals damage to target player or planeswalker equal to the number of Humans you control.

Burn at the Stake

As an additional cost to cast this spell, tap any number of untapped creatures you control.
Burn at the Stake deals damage to any target equal to three times the number of creatures tapped this way.

Manic Vandal

When this creature enters, destroy target artifact.

Elite Vanguard

Plains

Riot Ringleader

Whenever this creature attacks, Human creatures you control get +1/+0 until end of turn.

Mountain

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Pillar of Flame

Pillar of Flame deals 2 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Cathars' Crusade

Whenever a creature you control enters, put a +1/+1 counter on each creature you control.

Somberwald Vigilante

Whenever this creature becomes blocked by a creature, this creature deals 1 damage to that creature.

Commander's Authority

Enchant creature
Enchanted creature has "At the beginning of your upkeep, create a 1/1 white Human creature token."

Thraben Valiant

Vigilante Justice

Whenever a Human you control enters, this enchantment deals 1 damage to any target.

Banners Raised

Creatures you control get +1/+0 until end of turn.

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Moorland Inquisitor

{2}{W}: This creature gains first strike until end of turn. (It deals combat damage before creatures without first strike.)