For each opponent, choose up to one target creature that player controls. Shellshock deals X damage to each of those creatures. You create a Mutagen token for each creature dealt damage this way. (They're artifacts with ", , Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")

Flying
When Ezrim enters, investigate twice. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
, Sacrifice an artifact: Ezrim gains your choice of vigilance, lifelink, or hexproof until end of turn.

Flash
When this creature enters, target creature an opponent controls gets -2/-2 until end of turn. Remove all counters from that creature.

The Last Ride gets -X/-X, where X is your life total.
, Pay 2 life: Draw a card.
Crew 2

Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
Flashback

, Discard a card: Search your library for a card that shares a complete word in its name with the discarded card, reveal it, put it into your hand, then shuffle.

When this creature enters, mill two cards.
Whenever you cast a spell from your graveyard, tap target creature you don't control.
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

: Add one mana of any color that appears on your top. (A top is an outerwear garment worn on the upper body.)

Add seven . You can cast only one more spell this turn.

Whenever Wick or another Rat you control enters, create a 1/1 black Snail creature token if you don't control a Snail. Otherwise, put a +1/+1 counter on a Snail you control.
, Sacrifice a Snail: Wick deals damage equal to the sacrificed creature's power to each opponent. Then draw cards equal to the sacrificed creature's power.

This creature enters with two -1/-1 counters on it.
, : Remove a -1/-1 counter from target creature.

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)
Vigilance

Destroy target creature with mana value 3 or less. It can't be regenerated.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Return target permanent to its owner's hand.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
Whenever this creature or enchanted creature deals combat damage to a player, draw a card.
Enchanted creature gets +3/+3.

Flying
When this Vehicle enters, you may put up to two name stickers on it.
Whenever this Vehicle attacks, choose a letter. This Vehicle gets +1/+1 until end of turn for each name sticker on it that begins with the chosen letter.
Crew 2

Whenever you cast a spell with a Goblin Explosioneers watermark, this enchantment deals 2 damage to any target.

Phalanx Commander — When this creature enters, create two tapped 2/2 black Necron Warrior artifact creature tokens.
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

This land enters tapped.
: Add or .

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