msem-instigator

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
The first instant or sorcery spell you cast on each of your turns costs {U/R} (or {1}) less to cast.
{U}{R}: Angel — Put a flying counter and a prowess counter on Rahstahde.
{5}{U}{R}: Elder — Exile any number of instant and/or sorcery cards from your graveyard. For each card exiled this way, copy it. You may cast the copies without paying their mana costs.

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Tap target creature an opponent controls.
3 — Create two 1/1 white Spirit creature tokens with flying.
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(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Create a Treasure token.
3 — Create a tapped and attacking 5/5 red Dragon creature token with flying. Exile it at the beginning of the next end step.
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Flying, trample
Whenever Raidragos' Avenger deals combat damage to a player, create a 5/5 red Dragon creature token with flying.
Creatures you control get +1/+0 for each Dragon you control.

Flying, haste
{2}{R}{R}, Exile a multicolored card from your graveyard: Return Rainbow Phoenix from your graveyard to the battlefield tapped. If it's your declare attackers step, it enters attacking.

Flying
{B}: Target attacking creature gets +1/+1 until end of turn.

Flying
When Rallywing enters, creatures you control get +1/+1 until end of turn.

Reach (This creature can block creatures with flying.)
Whenever a land you control enters, Rammanethi Sandshaper deals 1 damage to target creature with flying.

Sacrifice a creature: Rapacious Demon gets +1/+1 and gains flying until end of turn. Activate only as a sorcery.

Flying
When Rapacious Regent enters, you may sacrifice another creature or artifact. If you do, Rapacious Regent deals 3 damage to any target.

Once each turn, when a creature card is put into your graveyard from anywhere, create a 1/1 blue and black Bird creature token with flying and “When this creature deals combat damage to a player, sacrifice it. If you do, draw a card.”
Whenever three or more creatures you control deal combat damage to a player, that player loses 1 life for each card in your hand.

Whenever Ravencaller or another creature enters from your graveyard, create a 1/1 blue Bird creature token with flying.

Flying
Whenever an opponent discards one or more cards, fateseal 1. (To fateseal 1, look at the top card of an opponent's library, then you may put it on the bottom of that player's library.)

Flying
When Razorwing Champion enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Flying

Flying, ward {2}
Whenever Realm Crossers deals combat damage to a player, create a blue enchantment token named Tambo with “At the beginning of your upkeep, draw a card if you control a Scout.”

Lionize {1}{B} ({1}{B}, Exile this card from your hand: Put a +1/+1 counter on target creature and it gains the following abilities until end of turn. You may cast this card on a later turn from exile.)
Flying, lifelink
Whenever this creature deals combat damage to a player, remove all counters from target permanent they control or protect.

Trial 6 (As you cast this spell, an opponent of your choice may pay 6 life. If they don't, they fail the trial.)
Flying
When Reckoner of Man enters, if the trial was failed, it deals 3 damage to each creature you don't control.

Flying, lifelink
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever Recreator of Myths attacks, you may cast target instant or sorcery spell from your graveyard. If you do, exile that card instead of putting it into your graveyard as it resolves.

When Red-Crowned Admiral enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
Each creature you control with a +1/+1 counter on it has flying.

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Counter target creature spell. If this spell was kicked, create a 1/1 colorless Thopter artifact creature token with flying.

Flying
{2}{U}: Switch target creature's power and toughness until end of turn.

Flying, lifelink

Vigilance
When this creature enters, create a 1/1 blue Bird creature token with flying.

Flying
Foresight — Whenever you draw your second card each turn, Relentless Sphinx deals 2 damage to any target and you gain 2 life.