The Brute

Enchant creature
Enchanted creature gets +1/+0.
: Regenerate enchanted creature.

Unsummon

Return target creature to its owner’s hand.

Benalish Hero

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature’s combat damage, not its controller, among any of the creatures it’s being blocked by or is blocking.)

Mob Mentality

Enchant creature
Enchanted creature has trample.
Whenever all non-Wall creatures you control attack, enchanted creature gets +X/+0 until end of turn, where X is the number of attacking creatures.

Weakness

Enchant creature
Enchanted creature gets -2/-1.

Unsummon

Return target creature to its owner’s hand.

Elixir of Vitality

Elixir of Vitality enters the battlefield tapped.
, Sacrifice Elixir of Vitality: You gain 4 life.
, , Sacrifice Elixir of Vitality: You gain 8 life.

Shadowbane

The next time a source of your choice would deal damage to you and/or creatures you control this turn, prevent that damage. If damage from a black source is prevented this way, you gain that much life.

Null Chamber

As Null Chamber enters the battlefield, you and an opponent each choose a card name other than a basic land card name.
Spells with the chosen names can’t be cast and lands with the chosen names can’t be played.

Reparations

Whenever an opponent casts a spell that targets you or a creature you control, you may draw a card.

Unsummon

Return target creature to its owner’s hand.