Fate Unraveler

Whenever an opponent draws a card, this creature deals 1 damage to that player.

Brine Hag

When this creature dies, change the base power and toughness of all creatures that dealt damage to it this turn to 0/2. (This effect lasts indefinitely.)

Stalker Hag

Swampwalk, forestwalk (This creature can't be blocked as long as defending player controls a Swamp or a Forest.)

Atraxa, Grand Unifier

Flying, vigilance, deathtouch, lifelink
When Atraxa enters, reveal the top ten cards of your library. For each card type, you may put a card of that type from among the revealed cards into your hand. Put the rest on the bottom of your library in a random order. (Artifact, battle, creature, enchantment, instant, land, planeswalker, and sorcery are card types.)

Aquatic Ingress

Up to two target creatures each get +1/+0 until end of turn and can't be blocked this turn. (Then exile this card. You may cast the creature later from exile.)

Sea Hag

When this creature enters, creatures your opponents control get -4/-0 until end of turn.

Sea Hag // Aquatic Ingress

Nip Gwyllion

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Harvest Gwyllion

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Gwyllion Hedge-Mage

When this creature enters, if you control two or more Plains, you may create a 1/1 white Kithkin Soldier creature token.
When this creature enters, if you control two or more Swamps, you may put a -1/-1 counter on target creature.

Scarwood Hag

{G}{G}{G}{G}, {T}: Target creature gains forestwalk until end of turn. (It can't be blocked as long as defending player controls a Forest.)
{T}: Target creature loses forestwalk until end of turn.

Hag Hedge-Mage

When this creature enters, if you control two or more Swamps, you may have target player discard a card.
When this creature enters, if you control two or more Forests, you may put target card from your graveyard on top of your library.

Desecrator Hag

When this creature enters, return to your hand the creature card in your graveyard with the greatest power. If two or more cards are tied for greatest power, you choose one of them.