msem-instigator

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)

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.

Whenever a creature you control deals combat damage to a player, put a tally counter on this enchantment. If it was a Dwarf or Elf, put two on it instead.
Remove two tally counters from this enchantment: Draw a card.

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

Tap up to two target creatures. Put a stun counter on one of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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.