msem-instigator

{T}: Add {C}. Spend this mana only to cast an instant or sorcery spell.
Whenever you cast a glitched spell, scry 2.

Flying, vigilance, lifelink
Embodiment of Law enters with an indestructible counter on it.
{5}{W}{W}, Remove an indestructible counter from Embodiment of Law: For each permanent type, exile up to one permanent of that type.

{T}: Draw a card. Artisan's Fountain doesn't untap during its controller's next untap step.

Prevent all combat damage that would be dealt this turn.
Draw a card.

When Festering Waif enters, each opponent mills two cards.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

{X}{2}, {T}, Sacrifice Tinkerer's Tools: Sacrifice an artifact. If you do, search your library for an artifact card with mana value less than or equal to the sacrificed artifact's mana value plus X. Put it onto the battlefield, then shuffle. Activate only as a sorcery.

Flying
When Messenger of the Heavens enters, surveil 1.
Whenever Messenger of the Heavens deals combat damage to a player, exile any number of target creatures in its pack, then return them to the battlefield under your control. (Two or more creatures you control with equal power are in a pack.)

As an additional cost to cast this spell, return any number of creatures you control to their owner's hands. This spell costs {2} less to cast for each creature returned in this way.
Trample, ward {3}
Keepers of the Rundfora's power and toughness are each equal to twice the number of cards in your hand.

{T}: Add {C}.
{T}: Add one mana of any color. Activate only if two or more land cards are in your graveyard.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
{1}{U}: Tap enchanted creature.

Flying
At the beginning of your upkeep, if you control three or more enchantments, create a 1/1 white Soldier creature token.

Destroy target artifact.
Reprise {R} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)

Conjure six duplicates of target instant or sorcery card in a graveyard into your main library. Then shuffle.
Draw a card.

{T}: Tap target creature. Activate only if Wizened Veteran is embattled. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

Deathtouch
Tribute 3 (As this creature enters, an opponent of your choice may put three +1/+1 counters on it.)
When Avatar of Amosis enters, if tribute wasn't paid, you may destroy target creature.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
Menace

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Destroy target creature with flying.
• Target creature you control fights target creature an opponent controls.

Search your library for a card, reveal it, then shuffle and put that card on top.
Kindle 3—{3}{B} ({3}{B}, Exile this card from your graveyard: Create three 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Prismatic — Whenever you cast a multicolored spell, target player mills two cards.

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Instant and sorcery spells you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)

Return target tapped creature to its owner's hand. (Then exile this card. You may cast the creature later from exile.)

Flying
Whenever another Spirit or another creature with flying you control enters, put a +1/+1 counter on Tattergeist.

Until end of turn, target creature loses all abilities and becomes a colorless Human with base power and toughness 1/1 and no name.

{T}: Add {C}.
Whenever you tap Masamori Initiate for mana, you may mill a card.

When Silvercrest Historian enters, scry 1, then investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)