Lore Seeker

Enchant creature
Enchanted creature gets +2/+2. Other creatures you control get +1/+1.

Flying
Whenever another creature enters the battlefield under your control, Adavene, Dean of the Arts deals 1 damage to each opponent.
Whenever a creature you control deals combat damage to a player, you may exile it, then return it to the battlefield.

Counter target spell unless its controller pays {1}.
Create a colorless artifact token named Lotus Petal with "{T}, Sacrifice this artifact: Add one mana of any color."

Trample
As long as it's an opponent's turn, Ambushing Alligator is a blue Bird with base power and toughness 1/1 and has flying and hexproof.

Return up to two target creature cards from your graveyard to your hand.

Enspirit
[+2]: Look at the top three cards of your library. Put one of them into your hand and exile the rest.
[–3]: Exile target creature. You may return it to the battlefield under its owner's control.
[–9]: Return any number of creature cards exiled with Lazaire to the battlefield under your control. Then exile any number of target creatures.

Harmony — Attach Arcane Saxophone to target creature.
When Arcane Saxophone enters the battlefield, harmonize.
Equipped creature gets +2/+2.
Equip {4}

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a spell with harmony.

{T}: Draw a card. Artisan's Fountain doesn't untap during its controller's next untap step.

Destroy target artifact or enchantment. Scry 2.

When you cast your third noncreature spell each turn, transform Aspiring Rascals.

Harmony — Scry 2.
{T}: Harmonize. Activate this ability only any time you could cast a sorcery.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.
If an effect would put one or more nonloyalty counters on a permanent you control, it puts twice that many of those counters on that permanent instead.

Flying
Harmony — Until the end of your next turn, you may cast target instant or sorcery card from your graveyard. If that card would be put into your graveyard this turn, exile it instead.
When Aven Acoustimancer enters the battlefield, harmonize.

Flying, vigilance

Haste
{1}{U}: Balloon Dragoon gains flying until end of turn.

At the beginning of combat on your turn, if there are five or more creature types among creatures you control, creatures you control get +2/+0 and gain menace until end of turn.

Exile target creature or planeswalker and all other creatures its controller controls with the same name as that permanent. Search its controller's graveyard, hand, and library for any number of nonland cards with the same name as that permanent and exile them. Then that player shuffles their library.

When Bayou Courier enters the battlefield, you may pay 2 life. If you do, create a 3/2 green Crocodile creature token with trample.

Choose one —
• Search your library for a card with harmony, reveal it, put it into your hand, then shuffle your library.
• Harmonize twice.

Enchant creature
Enchanted creature has base power and toughness 1/1 and is a Frog in addition to its other types.
When enchanted creature deals damage to a player, sacrifice Belittle.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Deathtouch
When Bitterheart Bokor leaves the battlefield, search your library for up to two Curse cards with different names, reveal them, put them into your hand, then shuffle your library.

Blazing Volley deals 1 damage to each creature your opponents control.

As Blessed Mausoleum enters the battlefield, you may pay {1}. If you don't, Blessed Mausoleum enters the battlefield tapped.