Black spells you cast cost {1} less to cast.

Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent of their choice that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

When this creature dies, return it to its owner's hand.

When this creature enters, each player sacrifices a creature of their choice.

{5}: At the beginning of your next upkeep, choose a basic land type. This creature gains landwalk of the chosen type until the end of that turn. (It can't be blocked as long as defending player controls a land of that type.)

Menace Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

When this creature dies, you may pay {1}{B}. If you do, target player discards a card at random.

You may choose not to untap this creature during your untap step. {T}: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped.

Whenever a player sacrifices a creature, you may put a +1/+1 counter on this creature.

When this creature enters, each opponent discards a card. For each opponent who can't, put two +1/+1 counters on this creature.

At the beginning of combat on your turn, target creature you control with power 2 or less gets +1/+0 and gains deathtouch until end of turn.

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.