+Slith (17)
Whenever Arcbound Slith deals combat damage to a player, put a +1/+1 counter on it.
Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Haste
Sacrifice a Goblin: Clickslither gets +2/+2 and gains trample until end of turn.
Menace
Whenever Etched Slith deals combat damage to a player, put a +1/+1 counter on it. When you do, you may remove a counter from another target permanent or opponent.
When Hexgold Slith enters, you get (two energy counters).
Whenever Hexgold Slith attacks, you may pay . If you do, it gains first strike until end of turn.
Whenever Hexgold Slith deals combat damage to a player, put a +1/+1 counter on it.
When Skullslither Worm enters, each opponent discards a card. For each opponent who can't, put two +1/+1 counters on Skullslither Worm.
Flying
Whenever Slith Ascendant deals combat damage to a player, put a +1/+1 counter on it.
Whenever Slith Bloodletter deals combat damage to a player, put a +1/+1 counter on it.
: Regenerate Slith Bloodletter.
Whenever Slith Firewalker deals combat damage to a player, put a +1/+1 counter on it.
Trample
Whenever Slith Predator deals combat damage to a player, put a +1/+1 counter on it.
Whenever Slith Strider becomes blocked, draw a card.
Whenever Slith Strider deals combat damage to a player, put a +1/+1 counter on it.
Slither Blade can't be blocked.
: Add .
Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)
Defender (This creature can't attack.)
: Slithering Shade gets +1/+1 until end of turn.
Hellbent — Slithering Shade can attack as though it didn't have defender as long as you have no cards in hand.
When Slithermuse leaves the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Flash
Whenever you cast another spell that has flash, you draw a card and each opponent loses 1 life.
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
When Slithery Stalker enters, exile target green or white creature an opponent controls.
When Slithery Stalker leaves the battlefield, return the exiled card to the battlefield under its owner's control.
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(two energy counters).. If you do, it gains first strike until end of turn.