Workhorse

Workhorse enters with four +1/+1 counters on it.
Remove a +1/+1 counter from Workhorse: Add .

Null Brooch

, , Discard your hand: Counter target noncreature spell.

Lab Rats

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Create a 1/1 black Rat creature token.

Pursuit of Knowledge

If you would draw a card, you may put a study counter on Pursuit of Knowledge instead.
Remove three study counters from Pursuit of Knowledge, Sacrifice Pursuit of Knowledge: Draw seven cards.

Nether Shadow

Haste
At the beginning of your upkeep, if Nether Shadow is in your graveyard with three or more creature cards above it, you may put Nether Shadow onto the battlefield.

Nether Shadow

Haste
At the beginning of your upkeep, if Nether Shadow is in your graveyard with three or more creature cards above it, you may put Nether Shadow onto the battlefield.

Angelic Protector

Flying
Whenever Angelic Protector becomes the target of a spell or ability, Angelic Protector gets +0/+3 until end of turn.

Verdant Force

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

Wall of Diffusion

Defender (This creature can’t attack.)
Wall of Diffusion can block creatures with shadow as though Wall of Diffusion had shadow.

Hanna’s Custody

All artifacts have shroud. (They can’t be the targets of spells or abilities.)

Twitch

You may tap or untap target artifact, creature, or land.
Draw a card.

Bayou Dragonfly

Flying; swampwalk (This creature can’t be blocked as long as defending player controls a Swamp.)

Giant Growth

Target creature gets +3/+3 until end of turn.

Merfolk Traders

When Merfolk Traders enters, draw a card, then discard a card.

Noble Benefactor

When Noble Benefactor dies, each player may search their library for a card and put that card into their hand. Then each player who searched their library this way shuffles.

Takara

Sacrifice a creature: Takara deals 1 damage to any target.

Cloud Spirit

Flying
Cloud Spirit can block only creatures with flying.