msem-instigator

Flying, haste
When Crimson Hellmaw enters, it deals 3 damage to any target.
Revive {5}{R}{R} ({5}{R}{R}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Put target creature on top of its owner's library. You create a token that's a copy of that creature.

Target creature you control deals damage equal to its power to target creature you don't control.

Flash
When Prismatic Champion enters, create a white Aura enchantment token named Sunward attached to target creature. The token has enchant creature and “Enchanted creature has protection from creatures.”

Menace
Whenever Ruin Delver attacks, you may sacrifice a land or exile a land card from your graveyard. If you do, you draw a card and you lose 1 life.

Enchant land you control
When Kelp Garden enters, mill three cards.
Whenever enchanted land is tapped for mana, add one mana of any color among cards in your graveyard.

Search your library for a basic land card and a Desert card, put them onto the battlefield tapped, then shuffle.

Flash
Enchant creature
When Moved by Instinct enters, put a +1/+1 counter on enchanted creature.
Enchanted creature has haste and trample.

This creature gets +1/+1 for each creature card in your graveyard.
{4}{R}, Sacrifice another creature: Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

Haste
Whenever Rapid Rodent attacks, it gets +1/+0 until end of turn for each other creature you control with flash and/or haste.

This spell costs {1} less to cast for each enchantment you control.
Flying, lifelink, trample
Disturb {6}{B}{B}. That spell costs {1} less to cast for each enchantment you control. (You may cast this card from your graveyard transformed for its disturb cost.)

You may have Ephemeral Qilin enter as a copy of a multicolored permanent you control.

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

Enchant land
Enchanted land has “{T}: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.”

Flash
When Scuripi Lookout enters, target creature gains hexproof until end of turn.
Whenever one or more creatures you control attack, you may return Scuripi Lookout to its owner's hand.

Whenever equipped creature attacks, put a +1/+1 counter on it.
Equip {2}

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
{1}{W}: Target creature and all creatures with the same name as that creature get +0/+1 until end of turn.

Choose a card name, then reveal the top five cards of your library. You may put a card with the chosen name into your hand. Put the rest on the bottom of your library in any order.
Draw a card.

Sunlit Ruins enters tapped unless you control a Swamp.
{T}: Add {G} or {W}.

Imisti enters with a concoction counter on it for each land card in your graveyard.
{1}{G}, Remove any number of concoction counters from Imisti: You gain that much life.
{3}{B}, Remove any number of concoction counters from Imisti: It deals that much damage to target creature or planeswalker.

Torrent of Ankuliths deals 5 damage to target creature. Create a 1/1 red Elemental creature token.

Cast this spell only if you have 10 or less life or if you control six or more lands.
All creatures get -5/-5 until end of turn.

Each instant and sorcery card in your graveyard gains agonize until end of turn.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Destroy target attacking or blocking creature.

For any number of target spells or abilities your opponents control, counter it unless its controller pays {4}.