msem-instigator

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Tap up to two target creatures [with the same name]. Those creatures don't untap during their controller's next untap step.

Creatures you don't control get -3/-0 until end of turn. Those creatures don't untap during their controller's next untap step.

Enchant creature
Enchanted creature has frenzy 3. (Whenever that creature attacks and isn't blocked, it gets +3/+0 until end of turn.)

{T}, Sacrifice another permanent: Add one mana of any color.
At the beginning of your end step, if you're horrific, put a +1/+1 counter on target creature. (You're horrific as long as you've sacrificed a permanent or discarded a card this turn.)

First strike
Stampede — Whenever Frenzied Nacatl and a creature with greater power attack, Frenzied Nacatl gets +2/+0 until end of turn.

Flying
Whenever Frenzied Sylph attacks or blocks, you may pay {R}. If you do, it gets +3/+0 until end of turn. Exile it at the beginning of the next end step.

Lifelink
Frenzied Watchkeeper enters with six -1/-1 counters on it.
At the beginning of each end step, if an opponent lost life this turn, remove a -1/-1 counter from Frenzied Watchkeeper.

As an additional cost to cast this spell, you may sacrifice a creature.
Create a 1/1 green Insect creature token. If you sacrificed a creature to cast this spell, create three of those tokens instead.

{1}{B}, {T}, Remove a time counter from a permanent you control: Fretport Anarchists deals 2 damage to any target. You gain 2 life.

When Fretport Bounty Hunter enters, scry 1.

Whenever a -1/-1 counter is put on a creature, you may create a 1/2 green Frog creature token.

{2}{U}: Each player mills three cards.
{3}{B}, Discard a card: Return target creature card from your graveyard to your hand. Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

At the beginning of your end step, choose one at random —
• Create a tapped Treasure token.
• Forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)
• Arm target creature you control. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Whenever you sacrifice another permanent, Fretport Mob gets +1/+1 and gains haste until end of turn.

When Fretport Warden enters, scry 2.

At the beginning of each end step, Fretport's Fade deals 2 damage to each player that had one or more cards put into their graveyard this turn.

Haste
{W}: Fretport's Heedless gains lifelink until end of turn.
At the beginning of your end step, sacrifice Fretport's Heedless.

Exile X target creature cards from graveyards. You gain life equal to the total mana value of those cards.

Defender
When Friend of Tides enters, rouse 2. (Distribute two +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

Friend of the Woods has hexproof as long as it has a +1/+1 counter on it.
{1}{G}, {T}: Put a +1/+1 counter on Friend of the Woods.

At the beginning of your end step, if you own a card in exile, create a 1/1 white Spirit creature token with flying.

Whenever a creature an opponent controls deals damage to you, monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)
Frigid Behemoth can't attack unless it's monstrous.

Frigid Highlands enters tapped unless you control an Island.
{T}: Add {R} or {G}.

{T}: Add {C}.
{T}, Pay 1 life: Add {G} or {W}.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, Frilled Drakeling gains menace until end of turn.