msem-instigator

Deathtouch
Whenever an Egg you control dies, you may return an exiled card on an Adventure to its owner's hand.

Enchant creature
Enchanted creature has base power and toughness 3/3.

This spell can't be countered.
Players can't gain life.
{1}{R}: This enchantment becomes a 4/4 red Elemental creature with trample and haste until end of turn. Activate only during your turn.

When From Peace and Purpose enters, exile all creatures until From Peace and Purpose leaves the battlefield.
At the beginning of your upkeep, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Nonstoried creatures lose all abilities and have base power and toughness 1/1. (Enchantments and legendary permanents are storied.)

When Reclamation Sage enters, you may destroy target artifact or enchantment.

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
You gain X life.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Tapped creatures you control have hexproof.

Play with the top card of your library revealed.
You may play the top card of your library.
At the beginning of your end step, create an X/X green and blue Plant Elemental creature token with reach, where X is the top card of your library's mana value.

When Atrocity of Flesh enters, destroy target nonland permanent.
When Atrocity of Flesh dies, you may exile it. If you do, return target card from your graveyard to your hand.

Lifelink
{W}{B}, {T}: Dusk Rider deals X damage to target attacking creature, where X is the number of Spirits you control.

First strike
When Engulfing Incubus enters, you may submerge target nontoken creature an opponent controls. When Engulfing Incubus is no longer on the battlefield, turn that card face up. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

Whenever a creature you control dies, draw a card if it had power greater than its base power.

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.

Whenever a -1/-1 counter is put on a creature, you may create a 1/2 green Frog creature token.

Whenever you tap a land for mana, add one mana of any type that land produced.
Sacrifice Into Strange Territories: Untap up to two lands.

Equipped creature gets +3/+2.
Equip {3}

Whenever a creature dies, put a +1/+1 counter on Bog Apex.

When Ninhasir's March enters, it deals 3 damage to any target.
{1}{R}{R}: Transform Ninhasir's March. Activate only if your fealty to Mountains is five or greater.

When Bazaar Braggart enters, create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Trample, haste
Herald of Untold Riches gets +1/+1 for each color among other spells you've cast this turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever Glimmerwing Trickster deals combat damage to a player, scry 2.

Infiltrate (Whenever one or more attacking creatures you control aren't blocked, this creature gets +1/+1 until end of turn.)
When Exiled Warband dies, draw a card.

Target player sacrifices a nontoken creature and mills three cards.

Flash
When Mighty Beetle enters, you may put two +1/+1 counters on target creature you control.