msem-instigator

Destroy target noncreature, nonland permanent. (Destroying a battle doesn't remove counters from it.)
Flashback {3}{W}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Return up to two target creature cards from your graveyard to your hand.
3 | You may put a creature card with mana value 3 or less from your hand onto the battlefield.

Whenever an enchantment you control enters, put a +1/+1 counter on Freeborn Healer.

Destroy up to one target artifact or enchantment. 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.)

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.)

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

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

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

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.)

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.

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.)

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.

When Frisky Denmates enters, create a 2/1 red and white Fox creature token, then Frisky Denmates deals damage to target creature or planeswalker an opponent controls equal to the number of Foxes you control.

Reveal the top six cards of your library. Put all noncreature cards revealed this way into your graveyard, put the rest back on top in any order, then draw cards equal to the number of cards put on top.

Once each turn, if you would draw a card, you may skip that draw. If you do, create a tapped 3/2 colorless Horror creature token.

When From Peace and Purpose enters, exile all creatures until From Peace and Purpose leaves the battlefield.
At the beginning of your upkeep, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

At the beginning of your end step, if a card left your graveyard this turn, create a 3/1 black Human Rogue creature token named Shengin Renegade.

Whenever a creature you control enters for the first time each turn, you may sacrifice it. If you do, exile cards from the top of your library until you exile a creature card. Put that card onto the battlefield.

Whenever a creature you control enters, if its mana value is greater than the number of bloom counters on From a Seed, put a bloom counter on From a Seed.
Creatures you control get +1/+1 for each bloom counter on From a Seed.

At the beginning of your end step, untap all lands you control. You may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Treefolk creature with haste that's still a land.

All creatures get -2/-2 until end of turn.

Exile any number of target creatures you control. For each creature exiled this way, create a token that's a copy of it, except it's
a 4/4 white Angel Soldier with flying in addition to its other types.