msem-instigator

Serene Hart can't be blocked by creatures with power 4 or greater.

Soldiers you control get +1/+1.
Whenever one or more creatures attack, create a 1/1 red Soldier creature token.

Whenever you cast a spell, put a burst counter on Ascending Downfall, then if that spell's mana value is less than the number of burst counters on Ascending Downfall, sacrifice it and it deals damage equal to the number of burst counters on it to any target.

Enchant creature or planeswalker
Enchanted permanent can't attack, block, or transform, and its activated abilities can't be activated.

Flying
As long as you control an equipped creature, Guide of Heroes gets +1/+1 and has first strike.
As long as you control an enchanted creature, Guide of Heroes gets +1/+1 and has vigilance.

Defender
When Glacial Buttress dies, tap each creature that dealt damage to it this turn. Those creatures don't untap during their controller's next untap step.

Target player sacrifices any number of lands. That player searches their library for up to that many land cards, puts them onto the battlefield tapped, then shuffles.
Fabled {5}{G}{G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that player.)

Kicker {3} (You may pay an additional {3} as you cast this spell.)
Return target creature card from your graveyard to your hand. Then if this spell was kicked, return another target creature card from your graveyard to your hand.

Whenever a creature enters under an opponent's control, you may have that player lose 1 life.
Unveil {2}{B}{R} ({2}{B}{R}: Transform this. Unveil only as a sorcery.)

If you control seven or more creatures, you may cast Sociable Giant without paying its mana cost.
Trample

{T}: Add one mana of any color. Activate only if Shinrin Sage is enchanted, equipped, or has a card inscribed onto it.

Glitch {1} (Remove one [restriction] for each time you pay the glitch cost.)
Each opponent loses 3 life, discards a card, sacrifices a creature, then sacrifices a land.
[You lose 3 life.] [Discard a card.] [Sacrifice a creature.] [Sacrifice a land.]

Distribute two -1/-1 counters among one or two target creatures.

Whenever another creature with power 4 or greater you control attacks, Ruthless Brawler deals 1 damage to defending player.

Destroy four target creatures.

Cards in graveyards, exile, and libraries lose all abilities and card types.

{T}, Discard a card: Draw a card.
{2}{R}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy. Activate only if you have four or more instant and/or sorcery cards in your graveyard.

Menace
At the beginning of your end step, He of All Hallow's Eve deals damage equal to its power to you unless you're horrific. (You're horrific as long as you've sacrificed a permanent or discarded a card this turn.)

{2}: Atieh's Acolyte gains your choice of flying, vigilance, or lifelink until end of turn.
Whenever another Angel or Nephilim you control enters, put a +1/+1 counter on Atieh's Acolyte.
Surpass {4}{W}{U} ({4}{W}{U}: Transform this creature. This costs {1} less to activate for each counter on it. Activate only as a sorcery.)

Choose one —
• Attacking creatures get +2/+0 until end of turn.
• Discard up to two cards, then draw that many cards plus one.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
If you're in a renaissance, you may have up to one target creature or planeswalker gain indestructible until end of turn.
Destroy all creatures and planeswalkers.

({T}: Add {G} or {U}.)
Lush Oasis enters tapped unless you control a basic Forest or a basic Island.

Target creature you control gets +X/+0 until end of turn. It deals damage equal to its power to up to one target creature.

Scry 2, then draw two cards. You lose 2 life.

{T}: Add one mana of any color.
{4}, {T}, Sacrifice Prototype Engine: Put four -1/-1 counters on target creature.