msem-instigator

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

Vigilance
{W}{U}: Each creature you control assigns combat damage equal to its toughness rather than its power this turn.

Choose one—
• Fellor Charm deals 3 damage to any target.
• Target creature gains lifelink and indestructible until end of turn.
• Attacking creatures get +1/+1 until end of turn.

Inversion of Flesh deals 5 damage to each creature and each planeswalker, and 5 damage to each player with the highest life total or tied for highest life total among players.

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

As long as Vinehorn Stag has a +1/+1 counter on it, it can't be blocked by more than one creature.

Flying
Effigy of Wisdom gets +1/+1 as long as your fealty to Islands is four or greater. (Each Island you control counts towards your fealty to Islands.)

Target player gains X life.

Apothecary's Gift deals 5 damage to target creature or planeswalker. You gain life equal to the excess damage dealt this way.

Pressure {2}{B} (You may cast this spell for its pressure cost if there are seven or more cards in your graveyard.)
Menace (This creature can't be blocked except by two or more creatures.)

Creatures you control gain first strike and vigilance until end of turn. Permutate. (You may remove a counter from a creature you control. If you do, put two +1/+1 counters on a different creature you control.)

Tap up to two target creatures.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

Whenever a source you control deals damage to a creature or planeswalker an opponent controls, exile that creature or planeswalker.

Enchant creature
Enchanted creature gets +1/+1 and has vigilance.
{2}{G}: Return Behold the Horizon from your graveyard to your hand.

Goblin Exploration Team gets +1/+0 for each non-Mountain land you control.

Target creature gets -2/-2 until end of turn. Scry 1.

When Keeper of the Ancient Ways enters, destroy up to three target noncreature, nonland artifacts and/or enchantments with total mana value 3 or less.

{2/W}, {T}: Tap target creature.

You may cast spells with mana value 5 or greater as though they had flash.
As long as you control a permanent with mana value 5 or greater, Cenotaph Conjurant gets +2/+0 and can't be blocked.

When Sandbluff Assailant enters, it deals 1 damage to target player or planeswalker.

When Voltaic Conduit enters, it deals 5 damage to target creature or planeswalker you don't control.
Whenever you attack, you may discard a card. If you do, draw a card.

First mate—Each nonland card in your starting deck has “destroy,” “die,” “graveyard,” and/or “mill” in its printed rules text. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Deathtouch
When Marisa enters, if it was cast, you may put target permanent card from a graveyard onto the battlefield under your control.

{2}, Exile a land card from your graveyard: Create a token that's a copy of that land.

Menace
Ward—Pay 3 life.
Whenever you cast a spell from anywhere other than your hand, each opponent loses 1 life and you gain 1 life.