Put target creature on top of its owner's library. Its controller surveils 1, then you surveil 1.

When Adaptive Hydra enters, teach it your choice of haste, menace, or vigilance. Then repeat this process X times.

Whenever you cast a spell, if mana from an artifact source was spent to cast it, you may copy that spell, and you may choose new targets for the copy. Do this only once each turn.

Whenever Anesthesiologist attacks, teach it lifelink.

Menace
When Ardent Voter enters, make a pledge.

At the beginning of your upkeep, exile the top card of your library.
You may play cards exiled with Aristocracy as long as you've sacrificed a nonland permanent this turn.

Army Reserves enters with X +1/+1 counters and a defender counter on it.
{1}: Move a counter from Army Reserves onto another target creature. Activate only as a sorcery.

Flying
Whenever Arsenal Mentor attacks, teach target attacking creature with lesser power flying.

When Ascend to Power enters, you may sacrifice a creature, discard a card, or pay 3 life. If you do, draw two cards.
You've sacrificed a nonland permanent this turn.
You've discarded a card this turn.
You've lost life this turn.

Trample
Whenever Aspiring Anarchist attacks, you may have its base power and toughness become equal to the power and toughness of another target attacking creature until end of turn.

Haste
When Assault Engine enters, gain control of target creature and untap it. Sacrifice it at the beginning of the next end step.
Crew 2

Creatures you control get +1/+0.
Creatures you don't control get -1/-0.

As an additional cost to cast this spell, remove any number of counters from among creatures you control. This spell costs {1} less to cast for each counter removed this way.
Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

When Ballot Registrar enters, make a pledge.
Activated abilities of permanents you control cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

{2}, Sacrifice a creature: Teach target creature menace.

Bioengineered Opus enters with three +1/+1 counters, a lifelink counter, and a vigilance counter on it.
When Bioengineered Opus dies, for each creature you control, you may move a counter from Bioengineered Opus onto that creature.

Creatures you control have “{T}: Create a Treasure token.”
{W}{U}{B}{R}{G}, Sacrifice Black-Tie Gala: Draw two cards.

Return target nonland permanent to its owner's hand. Then that player reveals their hand. You choose a nonland card from it. That player discards that card.

Flying
When Blue Collar Bloodsucker enters, if mana from an artifact source was spent to cast it, target player loses 2 life and you gain 2 life.

Defender
{3}{W}, {T}, Sacrifice Border Junction: Create three 1/1 colorless Soldier creature tokens. Activate only as a sorcery.

When Bouncers-for-Hire enters, if mana from an artifact source was spent to cast it, you may have it fight target creature you don't control.

Lifelink
Approval — {5}, {T}: Tap target creature. This ability costs {X} less to activate, where X is the number of colors among permanents you control.

Target creature gets -X/-0 until end of turn, where X is the number of cards in your graveyard.
Draw a card.

Draw two cards. If {W} was spent to cast this spell, you gain 2 life. If {B} was spent to cast this spell, each opponent loses 2 life.

You can't cast noncreature spells.
Creature spells you cast cost {X} less to cast, where X is the greatest power among creatures you control.