Flying
Level up {U/R}
[level 2-4] Flying, prowess
[level 5+] Flying, prowess, prowess, prowess

When Practicing Guru enters, create a Berry token.
Practicing Guru gets +1/+1 as long as you've sacrificed a Berry that was attached to it this turn.
Sacrifice a Berry attached to Practicing Guru: It gains indestructible until end of turn.

Approval — When Prismatic Propagandist enters, create X 1/1 colorless Soldier creature tokens, where X is the number of colors among permanents you control.

Flow — {4}{W}: Create a tapped 0/0 colorless Golem artifact creature token with “This creature gets +1/+1 for each artifact you control.”

Once each turn, when Smart Shopper enters or you cast a creature spell, you may create a Berry token. If three or more types of mana were spent to cast it, create two of those tokens instead.

Level up {1}{W}
[level 2-3] This creature has first strike during your turn.
[level 4+] This creature has first strike during your turn.

First strike
Landfall — Whenever a land you control enters, you may tap target creature.

Flying
Whenever an opponent spends mana, if it wasn't spent to cast a spell from their hand, you draw a card. This ability triggers only once each turn.

Flash
Flying
When Swooping Hunter enters, create a Berry token, then you may return another creature you control to its owner's hand.

When Synod of Sanctions enters, exile up to one target creature. For as long as that card remains exiled, its owner may cast it. A spell cast this way costs {1} more to cast.

Lifelink
When Traxian General enters, create a 0/0 white Army creature token. Put a +1/+1 counter on each Army you control.

Whenever Twilight Vagabond attacks, put a +1/+1 counter on it.
Cybersoul {2}{W}

As this creature enters, choose a nonland card name.
Whenever a player casts a spell with the chosen name, counter it. When you do, that player creates an X/X colorless Construct artifact creature token, where X is that spell's mana value.

Flying
When Whipwing Dragonfly enters, you gain 2 life.

Exalted
Whenever another creature you control attacks alone, draw a card.

Flying
When Civic Copterist enters, teach target creature flying.

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

Flying, ward {1}
Whenever you cast an instant or sorcery spell, mill a card. Return an instant or sorcery card milled this way to your hand. If you can't, put a +1/+1 counter on Covetous Frostwyrm.

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.

{2}{U}, {T}: Draw a card.
{6}{U}{U}, {T}: Draw four cards.

Flying
Amity — Whenever you attack with Dustwing Butterfly and exactly one other creature, create a tapped and attacking token that's a copy of target creature you control, except it's 1/1 and isn't legendary. Sacrifice that token at the beginning of the next end step.

Favored
Whenever your Champion attacks, it can't be blocked this turn.

Decayed
{2}{U}, Exile Expendable Researcher from your graveyard: Return target instant or sorcery card from your graveyard to your hand. Activate only as a sorcery.

Vigilance
{T}: Surveil 1.
Surface {3}{U}

Defender
When Herald of Awakening enters, draw a card. Then discard a card unless you control a Ruin.
Whenever a Ruin you control becomes spellcharged, Herald of Awakening loses defender until end of turn.