Giant Scorpion

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

The Scorpion God

Whenever a creature with a -1/-1 counter on it dies, draw a card.
{1}{B}{R}: Put a -1/-1 counter on another target creature.
When The Scorpion God dies, return it to its owner's hand at the beginning of the next end step.

Wasteland Scorpion

Deathtouch
Cycling {2} ({2}, Discard this card: Draw a card.)

Fell Stinger

Deathtouch
Exploit (When this creature enters, you may sacrifice a creature.)
When this creature exploits a creature, target player draws two cards and loses 2 life.

Bala Ged Scorpion

When this creature enters, you may destroy target creature with power 1 or less.

Dross Scorpion

Whenever this creature or another artifact creature dies, you may untap target artifact.

Serrated Scorpion

When this creature dies, it deals 2 damage to each opponent and you gain 2 life.

Soulstinger

When this creature enters, put two -1/-1 counters on target creature you control.
When this creature dies, you may put a -1/-1 counter on target creature for each -1/-1 counter on this creature.

Dakmor Scorpion

Pit Scorpion

Whenever this creature deals damage to a player, that player gets a poison counter. (A player with ten or more poison counters loses the game.)