msem-instigator

You may pay {R} and tap an untapped Warrior you control rather than pay this spell's mana cost.
Choose one —
• Double the power of target creature you control until end of turn.
• Target creature you control deals damage equal to its power to target creature or planeswalker.

Prowess
Landfall — Whenever a land you control enters, create a 1/1 green, blue, and red Elf Scout creature token with prowess.

Flying, vigilance

Artifact and enchantment spells you cast cost {1} less to cast.
Whenever Risti Salvager attacks, rediscover an artifact or enchantment card. (Look at the top card of your library. You may reveal it and put it into your hand if it's an artifact or enchantment card. Otherwise, put it back or into your graveyard.)

Whenever your team sacrifices a creature, each opponent loses 1 life and you gain that much life.

{T}: Untap target land.
{4}{G}: This creature gets +3/+3 until end of turn.

{T}: Add {C}.
{T}, Exile two cards from your graveyard: Add {W} or {B}.

({T}: Add {U} or {R}.)
As Ritzy Parlor enters, you may pay {1}. If you don't, Ritzy Parlor enters tapped.

Whenever a creature attacks one of your opponents, that player loses 1 life.

Creatures your opponents control attack each turn if able.
Blocking creatures you control get +4/+0.
{W}: Untap Masha, Hero of Pelastrov.

Play with the top card of your library revealed.
You may cast Elemental spells from the top of your library.

Defender
When Wall of Ivy enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

When Renegade Servitor enters, you gain 2 life and scry 1.

Choose five target cards in your graveyard. An opponent separates those cards into two piles. Put one pile into your hand and exile the other. Exile Hell or High Water.

Vigilance
{T}: Add {G}.

Sage of the Jade Baton can't be blocked by creatures with toughness 2 or greater.
Inspired — Whenever Sage of the Jade Baton becomes untapped, draw a card, then discard a card.

Motivate 1 (When this creature enters, you may motivate target creature with less power than this by putting a +1/+1 counter on it.)
When Goriana Tactician enters, you may tap target creature.

This spell costs {2} less to cast if you've cast both an instant spell and a sorcery spell this turn.
Haste

When Nitrous Renewer enters, you may put a land card from your hand onto the battlefield tapped.
{3}{G}, Exile Nitrous Renewer from your graveyard: Return target land card from your graveyard to your hand. Activate only as a sorcery.

Exile the top four cards of your library. You may cast instant and/or sorcery cards exiled this way until the end of your next turn.

Indestructible
Immortal Child can't block creatures with greater power.

First strike

Whenever one or more creatures you control attack, you may put a progress counter on Stormcannon Testing.
[PROGRESS 2-3] {T}: Target creature gets +2/+0 until end of turn.
[PROGRESS 4+] {T}: Target creature gets +2/+0 and gains double strike until end of turn.

{2}: Equipped creature gets +1/+0 until end of turn.
Equip {1}

Tears of Samang deals 3 damage to each creature and each player. If an opponent would be dealt damage this way, you may have Tears of Samang deal 3 damage to a planeswalker they control instead.