Operations Officer

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
When this creature enters, draw a card.
Whenever this creature attacks, put a +1/+1 counter on it.

Picard, Steadfast Captain

Whenever Picard enters or attacks, put two +1/+1 counters on another target creature you control.

Spock, Logical Choice

Vigilance (Attacking doesn't cause this creature to tap.)
{T}: Draw a card.

Trelane, Squire of Gothos

Vigilance (Attacking doesn't cause this creature to tap.)
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
Trelane can't be blocked.

Bio-Asset Allocator

Artifact creatures you control have "Whenever this creature attacks, each opponent loses 1 life and you gain 1 life."

Borg Queen, Perfection Manifest

Artifact creatures you control get +2/+0.
When Borg Queen enters, assimilate target creature card from an opponent's graveyard. (Put it onto the battlefield under your control with a +1/+1 counter. It's a Borg artifact creature and loses all other creature types.)

Kirk, Enterprising Captain

Menace (This creature can't be blocked except by two or more creatures.)
Whenever Kirk attacks while creatures you control have total power 8 or greater, exile the top card of your library. You may play that card this turn.

Klingon Strike Force

Trample (This creature can deal excess combat damage to the player it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature dies, it deals 2 damage to each opponent.

Benjamin Sisko, Besieged

Play with the top card of your library revealed.
You may play lands and cast creature spells from the top of your library.

Tenacious Tosk

This creature can't be blocked by more than one creature.
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

Captain Kirk, Boldly Going

Vigilance
Spacecraft creatures you control get +3/+3.
Whenever Captain Kirk enters or attacks, search your library and/or graveyard for a basic land card or a card named Starship Enterprise, reveal it, and put it into your hand. If you search your library this way, shuffle.

Star Trek Commander