Whenever a creature you control attacks alone, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Put a +1/+1 counter on target creature. It gains lifelink and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

When Bullseye enters, you may sacrifice an artifact or discard a nonland card. When you do, Bullseye deals 2 damage to any target.
, , Sacrifice an artifact or discard a nonland card: Bullseye deals 2 damage to any target.

Flying
Whenever you cast a blue spell, tap up to one target creature.
Whenever you cast a red spell, you may discard a card. If you do, draw a card.

Enchant creature
Enchanted creature gets +2/+2 and has flying.
: Return this card from your graveyard to the battlefield attached to target creature you control with power 1 or less. Activate only as a sorcery.

Whenever this creature attacks, you may sacrifice another creature. If you do, put a number of +1/+1 counters on this creature equal to the sacrificed creature's power.
When this creature dies, amass Goblins X, where X is this creature's power. (Put X +1/+1 counters on an Army you control. It's also a Goblin. If you don't control an Army, create a 0/0 black Goblin Army creature token first.)

Open Fire deals 3 damage to any target.

Other artifact creatures you control get +1/+0.
: Create a token that's a copy of another target artifact you control. That token gains haste. Sacrifice it at the beginning of the next end step.

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. It enters tapped and attacking.)
When this creature enters, you gain 3 life.

Whenever this creature or another creature you control dies, target opponent loses 1 life and you gain 1 life.

When this creature enters, it deals 3 damage to each opponent and you gain 3 life.
When this creature dies, discard any number of cards, then draw that many cards plus one.

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, target player mills two cards. (They put the top two cards of their library into their graveyard.)

Whenever this creature attacks while saddled, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Saddle 1 (Tap any number of other creatures you control with total power 1 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

, Tap an untapped creature you control: Add one mana of any color.

When this Spacecraft enters, mill three cards, then return a creature or Spacecraft card from your graveyard to your hand.
Station (Tap another creature you control: Put charge counters equal to its power on this Spacecraft. Station only as a sorcery. It's an artifact creature at 8+.)
8+ | Flying, lifelink

At the beginning of your upkeep, surveil 1.
, , Sacrifice this artifact: Return target creature or Vehicle card from your graveyard to the battlefield. Activate only as a sorcery.

Reach
Discard a card: Draw a card. Activate only as a sorcery and only once each turn.

When this Vehicle enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)