Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Target creature gets +1/+1 until end of turn for each Forest you control.

Flying
When Puppeteer Clique enters the battlefield, put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Whenever Rabid Wolverines becomes blocked by a creature, Rabid Wolverines gets +1/+1 until end of turn.

Raven's Run Dragoon can't be blocked by black creatures.

When Ravenous Baboons enters the battlefield, destroy target nonbasic land.

Return all artifacts and enchantments to their owners' hands.

Target creature gets +3/+3 until end of turn.
Recover (When a creature is put into your graveyard from the battlefield, you may pay . If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)

Return two target cards from your graveyard to your hand. Exile Restock.

Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's converted mana cost to that permanent or player. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Double strike (This creature deals both first-strike and regular combat damage.)

: Gain control of target creature for as long as that creature is enchanted.

When Sarcomancy enters the battlefield, create a 2/2 black Zombie creature token.
At the beginning of your upkeep, if there are no Zombies on the battlefield, Sarcomancy deals 1 damage to you.

As an additional cost to cast this spell, sacrifice a creature.
Return any number of target creatures you control to their owner's hand.

At the beginning of your upkeep, sacrifice School of Piranha unless you pay .

Flying
: Scourge of Kher Ridges deals 2 damage to each creature without flying.
: Scourge of Kher Ridges deals 6 damage to each other creature with flying.

: Exile the top card of target player's library. If it's a land card, you gain 1 life.
Landfall — Whenever a land enters the battlefield under your control, you may untap Scrib Nibblers.

: Untap target creature.

Flying, vigilance

Other Snake creatures you control get +2/+2.
Whenever a Snake you control deals combat damage to a player, you may draw a card.