msem-instigator

As an additional cost to cast this spell, sacrifice a creature.
Put X +1/+1 counters on target creature you control, where X is the sacrificed creature's power. You gain X life.

Equipped creature gets +1/+0.
Equipped creature has deathtouch as long as it's attacking.
Equip {1}

Trample
Whenever a creature dies, put a +1/+1 counter on Venomclaw Skitterer. You gain 1 life.

Frenzy 1 (Whenever this creature attacks and isn't blocked, it gets +1/+0 until end of turn.)
Whenever Venomous Haploc becomes blocked, other creatures you control gain deathtouch until end of turn.

Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Reach
Whenever Venomtongue Archer deals damage to a creature, put that many -1/-1 counters on that creature.

Enchant creature
Enchanted creature has “{T}: Add one mana of any color. Put a +1/+1 counter on this creature.”

Whenever Verdant Curtain Caretaker enters or attacks, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

When Verdant Curtain Mascot enters, choose one —
• You gain 2 life.
• Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

When Verdant Curtain Naturalist enters, you gain 3 life.
{T}: Add one mana of any color.

Auditioning for a color causes you to create a 1/1 colorless Construct Actor creature token, then create one of the audition's Role tokens.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
{2}{G}: Reveal the top three cards of your library. You may put a creature card from among them on top. If you're in a renaissance, put it into your hand instead. Put the rest on the bottom of in any order.

You may play an additional land on each of your turns.
Whenever a land you control enters, creatures you control get +1/+1 until end of turn.

Enchant land
When Verdant Haven enters, you gain 2 life.
Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Return target permanent card from your graveyard to your hand. If a card with a mana ability was returned to your hand this way, add three mana of any one color.

You may play basic land cards you own from outside the game.

Reveal the top thirteen cards of your library. For each permanent type, you may put a card of that type revealed this way into your hand. Put the rest into your graveyard. (The permanent types are creature, land, artifact, enchantment and planeswalker.)

Target creature gets +3/+3 and gains trample until end of turn.
Lifecycle {3} ({3}, Discard this card: Create two tapped 1/1 colorless Elemental creature tokens.)

{4}{G}, Discard a card: Reveal cards from the top of your library until you reveal a nonland permanent card. Put that card onto the battlefield and the rest into your graveyard.

Remove a +1/+1 counter from a creature you control: Regenerate Verendas Brawler. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

When Verendas Spiritwalker enters, you may put a +1/+1 counter on target creature.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. You gain 2 life.

Encourage ({T}: Another target creature you control gets +1/+1 until end of turn. Encourage only as a sorcery.)
Whenever a creature deals combat damage to a player, if it was encouraged by Veteran Horncaptain this turn, exile the top three cards of your library. You may put a permanent card from among them onto the battlefield.

Choose one —
• Destroy target artifact or enchantment with mana value 3 or less.
• You gain 3 life. Draw a card.

Vigorbreath Scourge enters with X +1/+1 counters on it.
Whenever Vigorbreath Scourge attacks, it gets +X/+X until end of turn, where X is your devotion to green. Then if its power is 6 or greater, draw a card. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)