msem-instigator

Prevent all damage that would be dealt by creatures this turn.

Enchant creature
Enchanted creature gets +2/+2.
Enchanted creature has hexproof as long as it's tapped.

When Scuripi Collector enters the battlefield, return target artifact, enchantment, or land card from your graveyard to your hand.

Flash
When Scuripi Lookout enters the battlefield, target creature gains hexproof until end of turn.
Whenever one or more creatures you control attack, you may return Scuripi Lookout to its owner's hand.

Vigilance
{T}: Add {G}.

When Shifty Squirrel enters the battlefield, you gain 3 life.
Sacrifice a creature: Transform Shifty Squirrel.

Whenever a creature dealt damage by Rei's Betrayer this turn dies, you gain life equal to that creature's toughness.

Whenever Skitterthorns blocks or becomes blocked, creatures you control gain deathtouch until end of turn.

Until end of turn, noncreature lands you control become 3/3 Elemental creatures with haste and trample.
Orchestrate {1}{G} (You may exile this card from your hand anytime you could cast a sorcery for its orchestrate cost. When you next resolve a spell, you may cast this from exile without paying its mana cost.)

When Wayfaring Realmstitcher enters the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Lifelink
At the beginning of your end step, if you gained life this turn, put a +1/+1 counter on Backstage Manager.

When Backstage Tinkers enters the battlefield, you may return an artifact card from your graveyard to your hand.

[+1]: Exile up to two target cards from graveyards. You gain 3 life.
[–2]: Exile target artifact, enchantment, or nonbasic land.
[–7]: You get an emblem with “At the beginning of your upkeep, exile target noncreature permanent.”

[+2]: Create a 3/3 red Wurm creature token.
[–2]: Up to three target creatures each get +2/+2 until end of turn. Bessie deals 2 damage to each of up to three target creatures.
[–9]: You get an emblem with “Creatures you control have base power and toughness 7/7 and have indestructible.”

As long as you've gained life this turn, Bloodied Outcast gets +1/+0 and has lifelink.
As long as an opponent has lost life this turn, Bloodied Outcast gets +0/+1 and has deathtouch.

Whenever you investigate for the first time each turn, investigate an additional time.
{T}, Sacrifice an artifact: Cadalon Inspector deals 2 damage to any target.

Whenever Chi Lee attacks, you may discard a card. If you do, create a 4/4 black Demon creature token with “Whenever this creature deals combat damage to a player, return target card from your graveyard to your hand.”

[+2]: Put two +1/+1 counters or loyalty counters on up to one other target creature or planeswalker.
[0]: Cornrose, the Mighty deals 3 damage to target creature. That creature deals damage equal to its power to Cornrose.
[–2]: Until end of turn, target creature gets +X/+X and gains trample, where X is its power.

Return all creature cards from your graveyard to the battlefield. Those creatures gain haste until end of turn.
At the beginning of the next end step, you lose the game.

{W}{B}, {T}: Exile target nonland permanent until Ediam, the Inside Man leaves the battlefield. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell.

Vigilance
{W}{U}: Each creature you control assigns combat damage equal to its toughness rather than its power this turn.

[+1]: Tap target nonland permanent. It doesn't untap during its controller's next untap step.
[–2]: Exile target tapped nonland permanent.
[–4]: Target player skips their next untap step. Tap up to three target permanents.

The first artifact spell you cast each turn costs {2} less to cast.
The first ability of an artifact you activate each turn costs {T} less.

Other Actors you control get +1/+1.
Whenever a permanent you control transforms, Lantern Tender deals 2 damage to any target and you gain 2 life.

Trample
{2}{R}{G}: Creatures you control get +1/+1 until end of turn.