msem-instigator

Whenever equipped creature attacks, it gets +2/+2 and gains trample until end of turn.
Equip {2}

Each opponent sacrifices an artifact.
Scry 1.
Coalesce {6}{R} (You may cast this from your graveyard for its coalesce cost. If you do, put it onto the battlefield as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Ferocious — At the beginning of each combat, if you control a creature with power 4 or greater, Worshipper Whelp gets +2/+0 until end of turn.

Destroy target land. Then, judge target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

Wraith of the Fens gets +2/+2 as long as you've gained life this turn.

Choose target creature you control. If it has a +1/+1 counter on it, put an additional +1/+1 counter on it. Then it fights target creature you don't control.

Haste
When Wretched Merfolk enters the battlefield, target creature can't block this turn.

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

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.
Ferocious — Whenever enchanted creature attacks, if you control a creature with power 4 or greater, enchanted creature gains double strike until end of turn.

Spirited (When this creature enters the battlefield, you may activate one of its activated abilities without paying its cost.)
{4}{G}: Target creature gets +2/+2 until end of turn.

When Yamisaran Bladedancer enters the battlefield, you may attach an Equipment you control to target creature you control.

When Yamisaran Guard enters the battlefield, create a colorless Equipment artifact token with “Equipped creature gets +1/+1” and equip {1}.

Reach
{T}: Yangzhi Cloudpiercer deals 1 damage to target player or planeswalker.

Inspired — Whenever Yenzu Disciple becomes untapped, each opponent loses 1 life and you gain 1 life.

Whenever Yenzu Mindwrencher perseveres, each opponent discards a card. (A creature perseveres when it survives damage.)

Enchant creature
When Yenzu Puppeteering enters the battlefield, draw a card.
{1}{U}: Untap enchanted creature.

{4}, {T}, Sacrifice Yenzu Ritual Vessel: Yenzu Ritual Vessel deals 4 damage to target creature or planeswalker.

Young Dragonheart gets +1/+0 and has first strike as long as you control a legendary creature.

Reach
Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Whenever you cast an instant or sorcery spell, tap target creature an opponent controls.

{T}, Pay 1 life: Add one mana of any color.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Young Tempter enters the battlefield, you draw a card and you lose 1 life.

Target creature gains haste and trample until end of turn.
Fabled {3}{R/G}{R/G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Soldiercycling {2}{W} ({2}{W}, Discard this card: Search your library for a Soldier card, reveal it, and put it into your hand, then shuffle.)

Whenever you draw your second card each turn, put a +1/+1 counter on Youthful Tortoise.
Cycling {2} ({2}, Discard this card: Draw a card.)