Flash
Flying
Wasp's Sting — When The Wondrous Wasp enters, tap up to one target creature. It loses all abilities for as long as The Wondrous Wasp remains on the battlefield.

Flash
When this creature enters, empower Jace 3.
, Sacrifice this creature: The next spell you cast this turn can't be countered.

As There's No Folk Like Merfolk enters, choose a word with four or more letters.
At the beginning of your upkeep, name a movie whose title contains the chosen word. You can't name a movie twice. If you don't, sacrifice There's No Folk Like Merfolk.

Flying
Whenever Thieving Aven deals combat damage to a player, heist target opponent's library.
Whenever you cast a spell you don't own, put a +1/+1 counter on Thieving Aven.

Flying
Whenever this creature deals damage to an opponent, draw a card.

Whenever this creature deals damage to an opponent, draw a card.

Kicker . X can't be 0.
Flying
When this creature enters, if it was kicked, gain control of target artifact with mana value X or less. If that artifact is an Equipment, attach it to this creature.

Whenever this creature attacks, sacrifice it unless you sacrifice an Island.

Defender
This creature enters with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from this creature. Then if it has no ice counters on it, transform it.

: Draw two cards.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.
When this creature dies, create a 1/1 colorless Thopter artifact creature token with flying.

Flying
: This creature deals 1 damage to any target.

: Draw a card, then discard a card.

Flying
Your maximum hand size is reduced by four.

Flying
Your maximum hand size is reduced by three.

Devoid
Flying
Whenever you cast a colorless spell, target opponent exiles the top card of their library.

Flying
Your maximum hand size is reduced by two.

Threshold — : Put a +1/+1 counter on this creature and draw a card. Activate only if there are seven or more cards in your graveyard and only once.

Flash
This creature enters with a number of +1/+1 counters on it equal to the greatest number of cards an opponent has drawn this turn.
When this creature dies, draw cards equal to its power.

Defender
Whenever you surveil, put a +1/+1 counter on this creature.
As long as this creature has three or more +1/+1 counters on it, it can attack as though it didn't have defender.

Flying
Double team
Whenever you cast a spell during an opponent's turn, draft a card from Thoughtsteal Sprites's spellbook, then discard a card. This ability triggers only once each turn.

Thoughtsteal Sprites's spellbook includes the following cards:
• Bitterblossom
• Brazen Borrower
• Faebloom Trick
• Faerie Fencing
• Faerie Mastermind
• Flitterwing Nuisance
• Glen Elendra Guardian
• High Fae Prankster
• Hypnotic Sprite
• Likeness Looter
• Pestermite
• Picklock Prankster
• Spell Stutter
• Vendilion Clique
• Voracious Tome-Skimmer

Flying
Morph
When this creature is turned face up, return all other tapped creatures to their owners' hands.

Ninjutsu
Flying
When this creature enters from your hand, if it's attacking, create a token that's a copy of another target attacking creature. The token enters tapped and attacking.

Flash
Flying
When this creature enters, target creature an opponent controls gets -X/-0 until end of turn, where X is your devotion to blue.

When this creature enters, you get .
Whenever this creature attacks, you may pay . If you do, put a +1/+1 counter on it.

Flying
Whenever this creature deals combat damage to a player, proliferate.

Flash
Flying
Spells you cast with mana value 5 or greater cost less to cast and can't be countered.

Flying
Whenever you cast your second spell each turn, put a +1/+1 counter on this creature.

Defender
Flying
: This creature gets +1/+1 until end of turn.