Strongarm Thug

When this creature enters, you may return target Mercenary card from your graveyard to your hand.

Alley Grifters

Whenever this creature becomes blocked, defending player discards a card.

Swamp

Primeval Shambler

{B}: This creature gets +1/+1 until end of turn.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Drain Life

Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Corrupt

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Cateran Enforcer

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
{4}, {T}: Search your library for a Mercenary permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

Rampart Crawler

Cateran Kidnappers

{3}, {T}: Search your library for a Mercenary permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Rathi Intimidator

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
{2}, {T}: Search your library for a Mercenary permanent card with mana value 2 or less, put it onto the battlefield, then shuffle.

Howl from Beyond

Target creature gets +X/+0 until end of turn.

Bog Smugglers

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Phyrexian Driver

When this creature enters, other Mercenary creatures get +1/+1 until end of turn.

Cateran Summons

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

Evincar's Justice

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Evincar's Justice deals 2 damage to each creature and each player.

Cateran Persuader

{1}, {T}: Search your library for a Mercenary permanent card with mana value 1 or less, put it onto the battlefield, then shuffle.

Highway Robber

When this creature enters, target opponent loses 2 life and you gain 2 life.

Spineless Thug

Rathi Fiend

When this creature enters, each player loses 3 life.
{3}, {T}: Search your library for a Mercenary permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Paralyze

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.