You may cast this spell as though it had flash as long as {U} is spent to cast it.
Return target creature card with mana value X or less from your graveyard to the battlefield tapped. If {R} was spent to cast this spell, create a token that's a copy of that creature. It gains haste until end of turn. Sacrifice the token at end of combat.

Decayed
{1}{B}, Exile Expendable Medic from your graveyard: Return target creature card from your graveyard to your hand. Activate only as a sorcery.

{T}, Pay 1 life, Sacrifice an artifact or creature: Make a pledge.

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token.

As an additional cost to cast this spell, exile a card from your graveyard.
Search your library for a card with the same mana value as the exiled card, reveal it, put it into your hand, then shuffle. You lose 2 life.

Menace
When Covert Infiltrator is put into your graveyard from your library, you may pay 2 life. If you do or if you control a blue permanent, return this card to your hand.

Whenever Corrupt Congressman enters or attacks, make a pledge.
Cliques you control have “Pledge — {4}: Each opponent loses 3 life unless they discard a card or sacrifice a creature. Activate only as a sorcery.”

Whenever a creature you control deals combat damage to a player, you may sacrifice it. If you do, draw a card. Otherwise, surveil 1.

When Codename: Ant dies, you may search your library for a card named Codename: Ant, reveal it, put it into your hand, then shuffle.

Destroy target creature if it has power 3 or less or if you control a creature with flying.

At the beginning of your end step, if a creature card or creature token was put into your graveyard from anywhere this turn, surveil 1.

Flying
When Blue Collar Bloodsucker enters, you gain 2 life. Then if you control a red permanent, Blue Collar Bloodsucker deals 2 damage to each opponent.

Your maximum hand size is zero.
Pay 1 life: Draw a card. Activate only as a sorcery.

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.

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

Approval — Counter target noncreature spell unless its controller pays {X}, where X is the number of colors among permanents you control.

Whenever a creature an opponent controls becomes tapped, if it isn't being declared as an attacker, you may draw a card.
{4}{U}: Tap target creature without flying.

Creatures you control can't be blocked unless defending player pays {1} for each creature blocking it.
Creatures can't attack you unless their controller pays {1} for each creature they control that's attacking you.

Sterling enters under the control of an opponent of your choice.
At the beginning of your upkeep, surveil 1.
Play with the top card of your library revealed.
Your opponents may play lands and cast spells from the top of your library during their turns, and they may spend mana of any type to cast spells this way.

Enchant creature
When Stasis Chamber enters, if you control a creature with vigilance, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Flash
Flying
When Sleeper Strix enters, tap up to one target creature.
You may look at an additional card each time you surveil.

Draw three cards, then discard a card. If you controlled a white permanent as you cast this spell, tap up to one target nonland permanent.

Whenever you cast a spell, you may pay {X}, where X is that spell's mana value. If you do, copy it. You may choose new targets for the copy. Do this only once each turn.

When Research Grant enters, look at the top three cards of your library. Put one into your hand and the rest into your graveyard.
You've cast two or more spells this turn.
You've drawn two or more cards this turn.

Exchange control of target spell or creature you control and target spell or creature an opponent controls. Controllers of spells exchanged this way may choose new targets for them.