msem-instigator

I, II — Put your choice of a flying or hexproof counter on target creature you control.
III — Creatures you control with counters on them can't be blocked this turn unless defending player pays {3} and spells that target those creatures cost an additional {3} to cast until your next turn.
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Whenever a creature dies, put a +1/+1 counter on each creature you control with power less than it.
{3}{G}, Sacrifice a creature: Draw cards equal to the sacrificed creature's power.

Deathtouch
Whenever Oozing Adder attacks, you may have target creature defending player controls block it this combat if able.

Converge — When Operations Manager enters, create X 1/1 colorless Servo artifact creature tokens, where X is the number of colors of mana spent to cast Operations Manager.

Once each turn, you may pay {U} rather than pay the mana cost for a blue spell you cast.

Draw two cards. Create a tapped colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Enchant creature
Enchanted creature gets +1/+1 and has flying and indestructible.
At the beginning of your upkeep, sacrifice a creature.

Target player sacrifices an enchantment. You gain 4 life.

Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
When Painwield Explorer dies, it deals damage equal to its power to target player or planeswalker.

Vigilance
When Paired Pathfinders enters, if three or more colors were spent to cast it, create a 1/1 colorless Servo artifact creature token.

When Palace Vanguard enters, choose one —
• Create a 1/1 blue Bird creature token with flying.
• Create a 2/2 white Cat creature token.

{G/U}: Pangoling gains hexproof until end of turn.
{G/U}: Move a counter from target creature you control onto Pangoling.
{G/U}: Whenever Pangoling deals combat damage to a player this turn, draw a card. Activate only once each turn.
{1}: Pangoling gets +1/-1 or -1/+1 until end of turn.

{T}: Add {G}.
{T}: Add {W}, {U}, {R}, or {B}. Spend this mana only to cast a multicolored spell.

Whenever a player casts a spell from their hand, they reveal the top card of their library. If it's a nonland card with a mana value less than that spell's, they may cast it without paying its mana cost. Otherwise, they put it on the bottom of their library.
{2}{U}: Scry 1.

When Pestilent Vermin enters, target opponent loses 2 life unless they discard a card.
Whenever you cast a Tale, you may return Pestilent Vermin from your graveyard to your hand.

Enchant permanent
Enchanted permanent is a colorless Swamp Forest land.
Whenever enchanted permanent becomes tapped, its controller loses 1 life.

Whenever a nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of it except it's a 1/1 white Spirit creature in addition to its other types and colors.
{2}{B}, Sacrifice a creature: Each opponent loses 1 life and you gain that much life.

Draw two cards. If three or more colors of mana were spent to cast Planeswalker's Insight, draw three cards instead.

Flying
Whenever Planetary Reconnoiterer attacks, target creature you control gains flying until end of turn.

This spell costs {1} less to cast if you cast a spell with a mana payment of exactly {U} this turn. The same is true for {R}.
Once each turn, when you cast a blue or red instant or sorcery spell with mana value 1, you may pay its mana cost. If you do, copy it. You may choose new targets for the copy.

{T}, Exile a land card from your hand, from your graveyard, or a land that you control: Add one mana of any color.

This spell costs {1} less to cast for each artifact you control.
Choose two —
• Creatures without flying can't block this turn.
• Two target creatures get +2/+0 until end of turn.
• Power Drive deals 3 damage to any target.

{1}, {T}: Add one mana of any color.
Crew 1 (Tap any number of creatures you control with total power 1 or greater: This Vehicle becomes an artifact creature until end of turn.)

Converge — Precursor Sentinel enters with a +1/+1 counter on it for each color of mana spent to cast it.
Remove a +1/+1 counter from Precursor Sentinel: It deals 1 damage to any target.