msem-instigator

Enchant player
At the beginning of enchanted player's upkeep, their life total becomes 10.

Vanguard — Whenever a creature you control attacks alone, it gets +1/+1 until end of turn. Untap that creature.

{2}{B}, {T}, Sacrifice another creature: Each opponent loses 2 life and you gain 2 life.

Undercroft Portal enters with four barrier counters on it.
Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, draw a card and remove a barrier counter from Undercroft Portal. Then if it has no barrier counters
on it, transform it.

When Quillback dies, you may shuffle him into his owner's library. If you do, return up to one target Shaman creature card and up to one target non-Shaman creature card from your graveyard to your hand.

Forsaken Sunseeker gets +1/+1 and has flying as long as it's not your turn.

Equipped creature gets +2/+3.
Equip {4}
{2}: Attach Lodestone Sword to target artifact creature you control.

Flying, trample
Harbinger of Falling Skies enters with X +1/+1 counters on it.
Whenever Harbinger of Falling Skies attacks, you may remove a +1/+1 counter from it. If you do, draw a card.

Enchant creature
Enchanted creature gets +2/+2.
Whenever enchanted creature attacks, create a 2/2 white Knight creature token that's tapped and attacking.

Target creature gets -2/-2 until end of turn.
{3}{B}, Exile Rift Splicing from your graveyard: Aetherize target creature card with mana value 3 or less in a graveyard. Activate only as a sorcery. (To aetherize, create a token that's a copy of it, then exile that token.)

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Sword Dance deals 3 damage to target attacking or blocking creature. If you're in a renaissance, Sword Dance deals 5 damage to that creature instead.

(Choose only one work as a sorcery to add its ability.)
When Kanghyae Forum enters, you may return another permanent you control to its owner's hand. If you don't, draw a card.
{2}{G}: A Common Good
If an effect would create one or more tokens under your control, it creates that many of those tokens plus one instead.
{2}{W}: Rebuilding Trust
If an effect would put one or more counters on a permanent you control, it puts that many of those counters plus one on that permanent instead.

You may put a creature or planeswalker card from your hand onto the battlefield. If it's a creature, it gains haste and indestructible. Return it to your hand at the beginning of your next end step.

Destroy target nonland permanent with mana value 3 or less. (Then exile this card. You may cast Irbek later from exile.)

{2}{G}, Sacrifice a land: Gashing Panther gains indestructible until end of turn. Tap it.

Enchant opponent
Spells you cast that target enchanted player cost {2} less to cast.

Alpha (You may have this creature enter with a +1/+1 counter on it. If you do, it becomes alpha and can only attack alone.)
Battering Swine attacks each combat if able.

Flash
Flying
When Laughing Bird enters, you may return a creature you control to its owner's hand.

{T}: Add {C}.
As long as Shengin Heartland is in your graveyard, lands you control have “{T}: Add {G} or {U}.”

At the beginning of combat on your turn, untap target land. If that land is an Animus, it becomes a creature and gains haste until end of turn.

Exile target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Gain control of target creature until end of turn. Untap it. Until end of turn, it gains haste and “This creature can't be blocked.”
{1}, Discard Cruel Heartbeat: Add one mana of any color. Scry 1.

Whenever Single-Minded Mob becomes untapped, it gets +2/+2 until end of turn.

Destroy target enchantment. Put a +1/+1 counter on target creature you control.

{T}: Add {C}.
{2}, {T}, Sacrifice Warped Landscape: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.