When Stratos Sentry enters, target opponent chooses a nontoken creature they control. You integrate that creature.
As long as a creature card with power 3 or less is integrated onto Stratos Sentry, it gets +1/+0 and has flying.

Spellcharge 2

Spend only mana of different colors to cast this spell.
For each color among permanents you control, the first multicolored spell you cast each turn costs one mana of that color less to cast. This effect reduces only the amount of colored mana you pay.

{T}: Add {C}.
Whenever Wasted Watchpost deals combat damage to a player, you may sacrifice it. When you do, destroy target nonbasic land that player controls.
Spellcharge 3

Flying
Whenever Weather Elemental enters or attacks, it acclimates.
If a triggered ability of a Weather you control would trigger, it triggers an additional time.

Flying
Whenever one or more artifacts an opponent controls enter, that player sacrifices them unless they pay {1}.
Nonbasic lands your opponents control enter tapped.

Flying
When this creature enters, you may return another creature or Subroutine you control to its owner's hand.

Lifelink
When Eager Voter enters, make a pledge.

Lifelink
When this creature transforms into Reborn Follower, put a +1/+1 counter on target creature.

Whenever you activate an ability that targets Shiver Elemental, you may copy that ability. You may choose new targets for the copy.

Flying
Whenever Silversilk Emissary attacks, put a +1/+1 counter on another Advisor you control unless an opponent pays {2}.

Flying

Level up {2}{U}
[level 1-2]
[level 3+] Flying

When this creature enters, cache the top card of your library face down.
Activated abilities of Memories you control cost {1} less to activate.

Whenever Opal-Eye Allseer enters or you cast a noncreature spell, create a 1/1 white Bird creature token with flying.
Wander—{1}{U}, Exile two instant and/or sorcery cards from your graveyard.

Scuttle Tank enters with a defender counter on it.

Once each turn, when you activate a nonmana ability, you may have creatures your opponents control get -1/-0 until end of turn.
{2}: Unnerving Moth gains flying until end of turn.

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.”

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.

When Data Weaver enters, integrate the top two cards of target opponent's library.
Once during each of your turns, you may play a card integrated onto a permanent you control, and mana of any type can be spent to cast it.

When this creature enters, target player separates their hand into a face-up pile and a face-down pile. Choose one of those piles, reveal it, and choose a nonland card from it. Exile that card until this creature leaves the battlefield.

Menace
{4}{B}{B}: Transform Maw Impostor.

When Merciless Headsman enters, create a 2/2 colorless Minion creature token with decayed.
{1}{B}, Sacrifice another creature: Draw a card.

Favored
Whenever your Champion attacks, it gets +2/+0 until end of turn.

When Urban Explorer enters, return a permanent card with mana value 1 or less from your graveyard to your hand.
Landfall — Whenever a land you control enters, Urban Explorer gets +2/+1 until end of turn.