msem-instigator

Flying (This creature can't be blocked except by creatures with flying or reach.)
At the beginning of your upkeep, put a +1/+1 counter on Fleshrender Demon and you lose 1 life.

Enchant creature
When Flight of Fancy enters, draw two cards.
Enchanted creature has flying.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
You don't lose unspent red mana as steps and phases end.
I, II — Add {R}{R}.
III — Create a 3/3 red Phoenix creature token with flying, haste, and “{R}: This creature gets +1/+0 until end of turn.”

Lifelink
Pay 3 life: Flightful Fledgling gains flying until end of turn.

Whenever another creature you control enters, Flightpath Trainee gains flying until end of turn.

Trample
Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)

Create three 1/1 green Elk Rabbit creature tokens.
Menagerie — If there are five or more creature types among creatures you control, you may search your library for a card named Fluffpuff Frenzy, reveal it, put it into your hand, then shuffle.

Flying
Whenever Flying Scorpion attacks, it gets +1/+0 until end of turn for each creature you control that's not attacking.

Exile the top five cards of your library. You may play Dragon cards exiled this way as long as they remain exiled. You may play other cards exiled this way until the end of your next turn.

[+1]: Create a 1/1 red Dragon creature token with flying.
[–1]: Until end of turn, Flynn becomes a copy of target Dragon, except she has haste and indestructible. Her base power and toughness become equal to the number of Dragons you control.
[–3]: You may reveal a Dragon card you own from outside the game and put it into your hand.

Whenever a creature you control deals combat damage to a player, you may draw a card.
Fleeting {1}{U} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

Improve {R} ({R}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Whenever another creature you control with power less than or equal to Folkvar, Galdurheim Brawler's power attacks, Folkvar deals 1 damage to the player or planeswalker that creature is attacking and you gain 1 life.

Invigorate 2, then target creature you control fights target creature you don't control. (Choose a creature with the least power among creatures you control and put two +1/+1 counters on it.)

Creatures you control get +2/+1 until end of turn. Citizens and Peasants you control gain first strike until end of turn.

Exile target artifact, enchantment, or creature with flying.

Counter target spell. If a permanent spell is countered this way, create a token that's a copy of that card except it's a colorless creature, it's 2/2, and it's a Plant in addition to its other types.

Destroy target artifact or enchantment. Create a 1/1 green Saproling creature token.

When Forerunner of the Briar enters, sacrifice two lands. When you do, choose one —
• Create a 3/3 green Beast creature token.
• Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

You may put a creature or land card from your hand onto the battlefield. Then each opponent may put a permanent card from their hand onto the battlefield. If one does, you may repeat this process.

When Forest Whale dies, put a number of +1/+1 counters on target creature you control equal to Forest Whale's power.

Search your library for two land cards and reveal them. If you attacked this turn, put them onto the battlefield tapped. Otherwise, put them into your hand. Then shuffle.

Enchant creature
Enchanted creature gets +2/+2 and has flying and haste.
When enchanted creature dies, return it to the battlefield under its owner's control.

Exile target creature you control, then each other player may exile a creature they control. Each player who exiled a creature this way reveals cards from the top of their library until they reveal a creature card with mana value different from the creature they exiled, puts that card onto the battlefield, then shuffles.

Choose any number of target creature and/or planeswalker cards in your graveyard. Return one of them to the battlefield and put the rest on top of your library in any order.

Hexproof
Whenever you cast a spell with mana value 5 or greater, each opponent discards a card and loses 3 life.