Specialize
Hexproof from artifacts and enchantments

: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Flash
Enchant creature
When this Aura enters, if enchanted creature is red, tap it.
As long as enchanted creature is red, it loses all abilities.
Enchanted creature doesn't untap during its controller's untap step.

Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.
Cunning Action — : This creature can't be blocked this turn.

Flying
At the beginning of your end step, if a permanent you controlled left the battlefield this turn, create a 1/1 white Pegasus creature token with flying.

Breath Weapon deals 2 damage to each non-Dragon creature.

Hexproof from artifacts and enchantments
When this creature specializes, destroy up to one target artifact or enchantment. Scry 2.

This creature doesn't untap during your untap step.
Whenever you gain life, untap this creature.

Hexproof from artifacts and enchantments
When this creature specializes, destroy up to one target artifact or enchantment. You gain 4 life.

Haste
Specialize
Whenever Ambergris, Citadel Agent attacks, you may discard your hand and draw two cards.

Destroy target creature with power 4 or greater.
Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gains "You may spend mana as though it were mana of any color to cast this spell." If it has mana value 3 or less, you may put it onto the battlefield.
: Exile target card from a graveyard.

Flying
Specialize
When Lulu, Forgetful Hollyphant enters, you get a one-time boon with "When you cast a creature spell without flying, it perpetually gains flying."

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gets +1/+0 and gains haste and "You may spend mana as though it were mana of any color to cast this spell."
: Exile target card from a graveyard.

, , Sacrifice Navigation Orb: Search your library for up to two basic land cards and/or Gate cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Homunculus Servant — When Kenku Artificer enters, put three +1/+1 counters on up to one target noncreature artifact. That artifact becomes a 0/0 Homunculus artifact creature with flying.

Flying, trample

Flying
Keen Sight — When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

When this creature specializes, choose up to one target creature card and up to one target instant or sorcery card from among cards exiled with this creature. Conjure a duplicate of each of those cards into your hand. The duplicates perpetually gain "You may spend mana as though it were mana of any color to cast this spell."
: Exile target card from a graveyard.

: Add one mana of any color. When you spend this mana to cast a Dragon creature spell, it enters with an additional +1/+1 counter on it and gains hexproof until your next turn.

Enchant creature you control
Enchanted creature gets +3/+2, has haste, and attacks each combat if able.
: Return Craving of Yeenoghu from your graveyard to the battlefield attached to target creature you control. Craving of Yeenoghu perpetually gains "Enchanted creature gets -1/-1." Activate only as a sorcery.

Hexproof from artifacts and enchantments
When this creature specializes, destroy up to one target artifact or enchantment. Put a +1/+1 counter on each of up to two other target creatures.

Hexproof from artifacts and enchantments
When this creature specializes, destroy up to one target artifact or enchantment. Each opponent loses 3 life.

Specialize
When Rasaad, Monk of Selûne enters, exile target creature an opponent controls until this creature leaves the battlefield.

At the beginning of combat on your turn, mill a card. When you do, if there are four or more creature cards in your graveyard, put a +1/+1 counter on target creature you control and it gains deathtouch until end of turn. (To mill a card, put the top card of your library into your graveyard.)

Target opponent sacrifices a nontoken creature. If that creature had mana value 2 or less, conjure a duplicate of it into your hand. That duplicate perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

Target creature gets +2/+0 and gains first strike until end of turn. Up to one other target creature gets +0/+2 and gains lifelink until end of turn.

Counter target spell. Its controller draws a card.
Draw a card.

At the beginning of your end step, if creatures you control have total power 8 or greater, draw a card.

When this creature enters, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Whenever you attack, you may sacrifice one or more Treasures. When you do, up to that many target creatures gain double strike until end of turn.

When this creature enters, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
, Sacrifice another creature or a Treasure: Draw a card.

Choose one —
• Two-Weapon Fighting — Double target creature's power and toughness until end of turn.
• Archery — This spell deals 5 damage to target creature with flying.

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gets +2/+2 and gains "You may spend mana as though it were mana of any color to cast this spell."
: Exile target card from a graveyard.

Homunculus Servant — When this creature enters, put three +1/+1 counters on up to one target noncreature artifact. That artifact becomes a 0/0 Homunculus artifact creature with flying.

Exile up to five target permanent cards from your graveyard and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard. (Piles can be empty.)

Specialize
: Draw a card, then discard a card. Put a study counter on Vhal, Eager Scholar.