Draw three cards, then discard a card.

: This creature deals damage equal to its power to target opponent.

The Nuka-Cola Challenge — Whenever one or more creatures you control deal combat damage to a player, put a quest counter on Sierra and create a Food token.
Whenever you sacrifice a Food, target creature you control gets +X/+X until end of turn, where X is the number of quest counters on Sierra.

Menace
When Siegfried enters, mill three cards. Then put X +1/+1 counters on Siegfried, where X is twice the number of creature cards in your graveyard.

Enrage — Whenever this creature is dealt damage, put two +1/+1 counters on it. (It must survive the damage to get the counters.)

Lieutenant — At the beginning of combat on your turn, if you control your commander, create two 1/1 red Goblin creature tokens. Those tokens gain haste until end of turn.
, Sacrifice a Goblin: This creature deals 1 damage to any target.

When this creature enters, create three 1/1 red Goblin creature tokens.
, Sacrifice a Goblin: This creature deals 2 damage to any target.

Enchant creature
Enchanted creature gets +2/+4.

Trample
: Target creature can't block this turn.

Tap three untapped creatures you control: Each opponent loses 1 life.

Convoke
Trample

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control.
Whenever another nontoken Soldier you control dies, create a 1/1 colorless Soldier artifact creature token.

Double strike
Whenever this creature attacks, you may tap any number of untapped creatures you control. This creature gets +1/+1 until end of turn for each creature tapped this way.

Split second
Choose one —
• Destroy target artifact.
• Target creature gets +3/+2 and gains trample until end of turn.

Trample
When this creature enters, each opponent loses 3 life and you gain 3 life.

Replicate
Target Mountain becomes a 3/1 creature. It's still a land.

Enchant creature or Vehicle
As long as enchanted permanent is a Vehicle, it's a creature in addition to its other types.
Enchanted creature gets +3/+0 and has first strike.

Crew vehicles and wage war

Trample
Untapped creatures can't block.
Tapped creatures can block.

Flying
When this creature enters, destroy all Walls your opponents control.
Whenever this creature attacks, if defending player controls no Walls, it deals 2 damage to each creature without flying that player controls.

Hexproof
As long as this creature is attacking, for each creature you control, you may have that creature assign its combat damage as though it weren't blocked.

Lifelink
Morph

Exploit
When this creature exploits a creature, return target creature to its owner's hand.

Deathtouch
Exploit
When Sidisi exploits a creature, you may search your library for a card, put it into your hand, then shuffle.

, Sacrifice a creature you control with mana value X other than Sidisi: Return target creature card with mana value X plus 1 from your graveyard to the battlefield. Activate only as a sorcery.

Whenever Sidisi enters or attacks, mill three cards.
Whenever one or more creature cards are put into your graveyard from your library, create a 2/2 black Zombie creature token.