msem-instigator

Haste
Stampede — Whenever Fissure Bull and a creature with greater power attack, you may sacrifice a land. If you do, search your library for a basic land or Desert card, put that card onto the battlefield tapped, then shuffle.

At the beginning of your upkeep, if you don't control any Imps, you may pay {B}. If you do, create a 1/1 black Imp creature token.
Sacrifice a creature: Each opponent loses 1 life.

Pressure {B}{G} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Search your library and/or graveyard for a creature card with mana value 3 or less and put it onto the battlefield. If you searched your library this way, shuffle.

Flying
Erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order.)

Choose two —
• Until end of turn if an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.
• Create three 1/1 green Snake creature tokens.
• Create a 2/2 blue Bird creature token with flying.
• Create a 3/3 red Manticore creature token with haste.

Target instant or sorcery card in your graveyard gains flashback until end of turn. Its flashback cost is equal to its mana cost reduced by {2}.
Conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Choose two —
• Target player creates two 2/2 white Knight creature tokens with vigilance.
• Destroy target creature with power 4 or greater.
• Target player gains hexproof until end of turn.
• Return target nonland permanent you don't control to its owner's hand.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds one mana of any color.

Trample
As long as you control an Elemental creature, Wildheart Gorran gets +1/+1.

{2}, {T}, Sacrifice Vial of Dragonfire: It deals 2 damage to target creature.

Choose one —
• Return target creature card from your graveyard to your hand.
• Return two target creature cards with total mana value 4 or less from your graveyard to your hand.

Lifelink
Arcblade Enforcers gets +1/+1 as long as you control an enchantment.

Attacking creatures get +2/+0 and gain first strike until end of turn.

Lifelink
Whenever you gain life, you may transform Hopeful Caretaker. If you don't, put a +1/+1 counter on it.

If you would create a token, you may instead create a tapped 2/2 green Faerie Bard creature token.
Whenever one or more creature tokens you control deal combat damage to a player, that player sacrifices an artifact or enchantment.

Vigilance
Crew 2 (Tap any number of creatures you control with total power 2 or greater: This Vehicle becomes an artifact creature until end of turn.)

Slinking Raider can't be blocked by creatures with greater power.
Whenever Slinking Raider deals damage to a player or noncreature permanent, put a +1/+1 counter on it.
Surpass {5}{R} ({5}{R}: Transform this creature.
This costs {1} less to activate for each counter on it. Activate only as a sorcery.)

First strike
Whenever Deprived Div deals combat damage to an opponent, end the turn. (Creatures without first strike won't deal damage this turn.)

{T}, Sacrifice Ruined Citadel: Search your library for a Mountain or Plains card and put it onto the battlefield tapped, then shuffle.

Flying
When Dune Wraith enters, distribute two +1/+1 counters among Spirits you control.

Take an extra turn after this one. At the beginning of that turn's upkeep, if you control a legendary creature, each opponent exiles the top card of their library. Until the end of that turn, you may play those cards and you may spend mana as though it were mana of any type to cast those spells.
Exile Stolen Moments.

This spell can't be countered.
Whenever Bitter Leviathan becomes the target of a spell or ability, exile it. Return it to the battlefield under your control tapped and attacking at the beginning of the declare attackers step on your next turn. It can't be blocked that combat.

Once each turn, when Rova, the Fleshweaver enters or you attack with one or more Horrors, you may put a +1/+1 counter on each creature you control. Then if Rova isn't a token, untap each land you control. Until your next turn, you may cast permanent spells as though they had flash.
{2}{G}{G}, Discard Rova: Create a token that's a copy of Rova, the Fleshweaver, except it's 4/4 and isn't legendary. Activate only as a sorcery.

Target Vehicle creature you control deals damage equal to its power to any target. If a creature or planeswalker dealt damage this way would die this turn, exile it instead.

Activated abilities of creatures you control cost up to {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.