Falkenrath Marauders

Flying
Haste (This creature can attack and {T} as soon as it comes under your control.)
Whenever this creature deals combat damage to a player, put two +1/+1 counters on it.

Child of Night

Gruesome Deformity

Enchant creature
Enchanted creature has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Night Terrors

Target player reveals their hand. You choose a nonland card from it. Exile that card.

Tribute to Hunger

Target opponent sacrifices a creature of their choice. You gain life equal to that creature's toughness.

Stromkirk Patrol

Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

Markov Patrician

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Vampire Interloper

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.

Vampiric Fury

Vampire creatures you control get +2/+0 and gain first strike until end of turn. (They deal combat damage before creatures without first strike.)

Rakish Heir

Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.

Diabolic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Mask of Avacyn

Equipped creature gets +1/+2 and has hexproof. (It can't be the target of spells or abilities your opponents control.)
Equip {3}

Bloodcrazed Neonate

This creature attacks each combat if able.
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

Night Revelers

This creature has haste as long as an opponent controls a Human.

Traitorous Blood

Gain control of target creature until end of turn. Untap it. It gains trample and haste until end of turn.

Tectonic Rift

Destroy target land. Creatures without flying can't block this turn.

Swamp

Blood Seeker

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

Crossway Vampire

When this creature enters, target creature can't block this turn.

Traveler's Amulet

{1}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Curse of Stalked Prey

Enchant player
Whenever a creature deals combat damage to enchanted player, put a +1/+1 counter on that creature.

Falkenrath Noble

Flying
Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

Mountain

Cobbled Wings

Equipped creature has flying.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)