msem-instigator

If a source would deal damage to a creature this turn, prevent all but 1 of that damage.

When Weedy Wanderer leaves the battlefield or phases out, put a +1/+1 counter on a creature you control.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever Weedy Whackers attacks, create a 1/1 green Insect creature token that's tapped and attacking.

Weeping Lotus enters the battlefield with five petal counters on it.
At the beginning of your upkeep, remove a petal counter from Weeping Lotus. If you do, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Whenever you attack or block with one or more other creatures, Wehre-District Patrollers gets +1/+0 and gains first strike until end of turn.

Enchant creature
Enchanted creature gets +2/+2 as long as it's legendary. Otherwise, it can't attack or block.
When enchanted creature dies, if it's legendary, return that card to its owner's hand.

Counter target spell if you have more cards in your graveyard than that spell's controller.

Equipped creature gets +0/+3 and can't attack.
{5}: Attach Weight of Sin to target creature you don't control.
Equip {1}

Target player discards a card. Until your next turn, whenever that player casts a spell, they discard a card.

Whenever a creature enters the battlefield under your control from a graveyard, target opponent loses life equal to its power.

Put two +1/+1 counters on up to one target creature.
Coalesce {6}{G}{G} (You may cast this from your graveyard for its coalesce cost. If you do, put it onto the battlefield as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Flying
Welkin Tern can block only creatures with flying.

Well of Eternity enters the battlefield with X charge counters on it.
At the beginning of your precombat main phase, choose a color, then add one mana of that color for each charge counter on Well of Eternity.

Whenever West Ward Purifier becomes tapped, you gain 1 life.

Wharf Lumper can't be blocked by creatures with greater power.
Whenever Wharf Lumper attacks, mill a card. If that card was an instant or sorcery, Wharf Lumper gets +3/+0 until end of turn.

As an additional cost to cast this spell, sacrifice a creature.
Search your library, hand, or graveyard for a creature card with mana value 1 greater than the sacrificed creature's and put it onto the battlefield. If you searched your library this way, shuffle.

Flying, lifelink
Creatures entering or leaving the battlefield don't cause abilities to trigger unless that creature is in a pack. (Two or more creatures a player controls with equal power are in a pack.)

Return target nonland permanent to its owner's hand. Scry 1.

Return target creature to its owner's hand. If you controlled that creature, draw a card.

As an additional cost to cast this spell, sacrifice a creature.
Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard.

Mill three cards. When you do, return a nonland card from your graveyard to your hand.

When Whisperwoods Reclaimer enters the battlefield, if there are three or more land cards in your graveyard, return target land card from your graveyard to the battlefield tapped.

Prowess, haste
Mirage {R} (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

When Whiterun Ordainer enters the battlefield, you gain 4 life.

Escalate {B} (Pay this cost for each mode chosen beyond the first.)
Choose one or more —
• Wicked Blow deals 3 damage to target player or planeswalker.
• Wicked Blow deals 3 damage to target creature.
• You gain 3 life.