Enchant creature
When Contain for Study enters, tap enchanted creature.
You control enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Once each turn, when you activate an ability of a creature you control, untap that creature and put a +1/+1 counter on it.

{T}, Tap another untapped creature you control: You may tap or untap another target creature.
Whenever Contest Star becomes untapped, draw a card.

Menace
Whenever Corporate Mentor attacks, teach target attacking creature with lesser power menace.

{C/B}: Integrate target card in a graveyard.
As long as a creature card with flying is integrated onto Corpsepyre Fiend, it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance.

Flying
Flow — {2}{W/U}: Another target creature you control gains flying until end of turn. Activate only as a sorcery.

Destroy target artifact or land.
Flashback {4}{R}{R}

Cryptolabe enters tapped.
{T}: Add {G}{U}. This mana can't be spent to cast spells from your hand.
Sacrifice Cryptolabe: You may cast target artifact, instant, or sorcery card from your graveyard. Activate only as a sorcery.

Deathtouch
Ward—Pay 4 life.
Whenever Cybele of the Frozen Faith deals combat damage to a player, you may skip your next turn. If you do, at the beginning of your next turn's upkeep, each opponent discards their hand, you draw seven cards, then put seven +1/+1 counters on Cybele.

When this creature enters, create a 2/2 blue Bird enchantment creature token with flying.

Flash
Daggertooth Keelah can't block unless it entered this turn.
{1}{B}, Exile a permanent card from your graveyard: Daggertooth Keelah gains indestructible until end of turn.

Approval — When Dampening Reconciliator enters, tap up to one target creature and put X stun counters on it, where X is the number of colors among permanents you control.

Return target permanent card with an activated ability from your graveyard to the battlefield. You may activate its abilities this turn as though it had haste.

Ward {2}
Amity — Whenever you attack with Dazzling Performer and exactly one other creature, put a +1/+1 counter on each of those creatures. Until end of turn, they gain trample and “Whenever this creature deals combat damage to a player, draw a card.”

Lifelink
Corrupt — When this creature enters, return target creature card from your graveyard to your hand. If you cast this creature and you control a permanent with greater mana value than this creature, return that card to the battlefield instead.

Trample
Other creatures you control have trample.
When this creature dies, it deals 5 damage to target opponent unless they have you draw two cards.

You may choose this spell's targets at random. If you do, it costs {2} less to cast.
Return target instant or sorcery card from your graveyard to your hand.
Flashback {6}{R}

Whenever Defthand Infiltrator deals combat damage to a player, put a +1/+1 counter on it if it doesn't have one on it.
Defthand Infiltrator can't be blocked as long as it has a counter on it.

Dhante's Inferno deals 4 damage to any target. Create a number of tapped Treasure tokens equal to the amount of excess damage dealt this way.
{X}, Exile Dhante's Inferno from your graveyard: Each opponent loses X life and you gain X life. Spend only mana from artifact sources to activate this ability. Activate only as a sorcery.

Exalted, exalted, exalted

Exile target creature. Distribute two +1/+1 counters among up to two target creatures you control.

Defender
Whenever you cast an instant or sorcery spell, Dormant Slagheap loses defender until end of turn. If that spell was cast from your graveyard, put a +1/+1 counter on Dormant Slagheap.

Flying
When this creature enters, if it was cast, return up to three target creature cards with total mana value 3 or less from your graveyard to the battlefield.

Create a 1/1 white Human creature token, then put a +1/+1 counter on each creature you control.
Flashback {5}{W}

Create two 1/1 colorless Thopter artifact creature tokens with flying, then each Thopter you control deals 1 damage to each opponent.