msem-instigator

Put target creature on top of its owner's library.
Quickdraw {2}{U} (When a creature you control blocks or becomes blocked, you may cast this spell for {2}{U}.)

Whenever you draw a card, Silverblood Aspirant gets +1/+1 until end of turn.
{1}{R}, Discard a card: Draw a card.

When Boundary Hallowblade enters, create a white Aura enchantment token named Consecration Blessing attached to target land. The token has enchant land and “Enchanted land is named Hallowed Ground and has indestructible.”

Flying
When Apogee Cranes 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.”)

Equipped creature has base power and toughness 4/4, haste, and hexproof.
Equip {2}

Casualty 1 (As you cast this spell, you may sacrifice a creature with power 1 or greater. When you do, copy this spell.)
All creatures get -2/-2 until end of turn

Shining Showstopper deals 5 damage to any target. Audition for red. (Create a 1/1 Construct Actor creature token, a Warrior Role giving 3/2 and trample, or a Wizard Role giving 2/2 and prowess. Roles replace older ones.)

Swarming Midden enters tapped unless you control a basic Swamp.
{T}: Add {B}.
{1}{B}{B}: Swarming Midden becomes a 2/3 black Rat creature with menace until end of turn. It's still a land. Whenever it attacks this turn, create a 1/1 black Rat creature token with “This creature can't block.”

Enchant creature
Enchanted creature gets -X/-X, where X is 1 plus the number of counters on it.

Wyrmfire deals 3 damage to target creature or planeswalker. Excess damage is dealt to that permanent's controller instead.

Armed — Winterborn Savage gets +1/+1 and has vigilance as long as it's equipped.

Neblus' Legacy enters tapped.
When Neblus' Legacy enters, you may mill two cards.
{T}: Add {G} or {U}.

Coastal Metropolis enters tapped unless you have 15 or less life.
{T}: Add {W} or {U}.

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
You may play an additional land on each of your turns.
{1}{R}{G}: Demigod — Whenever a land you control enters this turn, it deals 3 damage to up to one target creature or planeswalker.
{6}{R}{G}: God — Until end of turn, lands you control become 3/3 Spirit creatures with indestructible and haste that are still lands. Untap them.

Refine {3}{W}{B} (You may cast this spell by sacrificing an artifact and paying the refine cost reduced by that artifact's mana value.)
When H-9K Prototype enters, if it was refined, destroy target nonland permanent.

Spells your opponents cast this turn cost {1} more to cast. (Then exile this card. You may cast the creature later from exile.)

Whenever one or more other creatures you control die, put a +1/+1 counter on Keeper of Tradition.

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Noncreature spells you cast cost {X} less to cast, where X is All-Encompassing Akvan's power.

Haste (This creature can attack and {T} as soon as it comes under your control.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Deep-Sea Terror can't attack unless seven or more cards are in your graveyard.

Highpoint Shrine enters tapped unless you played it from exile.
{T}: Add {W} or {U}.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

When Mindwave Rod enters, attach it to target creature you control.
Equipped creature gets +1/+1 and has “Whenever this creature deals combat damage to a player, draw a card.”
Equip {2}

Battalion — Whenever Barbarian Rager and at least two other creatures attack, Barbarian Rager gets +2/+0 until end of turn.

Trample
Art of war — At the beginning of your end step, if Dragon's Wake dealt damage to an opponent this turn, gain control of target land for as long as Dragon's Wake remains on the battlefield.
Tap three untapped creatures you control: Dragon's Wake becomes an artifact creature until end of turn.