msem-instigator

All creatures get -3/-3 until end of turn.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, if a creature would die this turn, exile it instead.

Flying
Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
If Chronowing Phoenix would die while it had no time counters on it, instead exile it, then return it to the battlefield.

Double strike, trample
Arise {3}{R}{W} ({3}{R}{W}, Exile this from your graveyard as a sorcery: Create a black token copy of it that's also a Zombie and can't block.)
When Bugrund arises, you may put an Equipment card from your hand or graveyard onto the battlefield attached to it.

Put a +1/+1 counter on target creature. It gains hexproof until end of turn.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, put the top card of your main library on the bottom of the archived library.
{G}: Exchange a card from the archived library with a card from your hand.

Double the power and toughness of target creature you control until end of turn. It doesn't untap during its controller's next untap step.

Discard a land card: Target creature can't block this turn.
{R}, Discard a land card: Target creature gets +2/+0 until end of turn.

[+2]: Draw two cards, then discard two cards unless you discard an instant or sorcery card.
[–3]: Reveal any number of cards from your hand. Fulmen deals damage to any target equal to the number of instant and sorcery cards revealed.
[–9]: Search each player's library for up to one instant card and one sorcery card. Cast those cards without paying their mana costs. Then each player shuffles.

Exile target creature you control, then return it to the battlefield under its owner's control.
Flashback {2}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Hopeful Healer gets +1/+1 and has lifelink as long as you are glorious. (You are glorious as long as you have a glory counter.)

Return up to two target cards from your graveyard to your hand. Put Shared Reminiscence on the bottom of its owner's library.

Whenever Poised Koi attacks or blocks, look at the top two cards of your library, put any of them into your graveyard, then the rest back on top in any order.

Whenever you attack, you gain 1 life for each attacking creature.
{5}{W}: Put a -1/-1 counter on target tapped creature. This ability costs {X} less to activate, where X is the amount of life you gained this turn.

Draw three cards. (Then exile this card. You may cast the creature later from exile.)

Destroy target creature. If you do, you may put a +1/+1 counter on a creature you control.

{X}{W}{W}: Prevent the next X damage that would be dealt to target creature you control this turn. Whenever damage is prevented this way, you gain that much life.

Trample
When Remnant of the Wild enters, if you cast it, untap all lands you control.

Livia's name is Senaturian Legion in addition to its other names as long as it's on the battlefield.
At the beginning of your upkeep, conjure a card named Senaturian Legion into your hand, then discard a card. (It's a 1/1 Human Soldier for {W}{W} that gets +1/+1 for each other creature on the battlefield named Senaturian Legion.)
Other Soldiers you control have haste.

As an additional cost to cast this spell, discard a card.
Draw two cards. Forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

Landfall — Whenever a land you control enters, Convoy's Companion gets +1/+1 until end of turn. If that land was a Desert, put a +1/+1 counter on it instead.

Until end of turn, creatures you control get +1/+1 and creatures your opponents control get -1/-1.

When Fading Memories enters, exile target creature card from a graveyard.

Target creature gets +2/+2 and gains lifelink until end of turn.

Double strike
Whenever you cast a noncreature spell, you may choose one that hasn't been chosen —
• Tap or untap target permanent.
• Draw two cards, then discard a card.
• Creatures you control get +1/+1 until end of turn.