Spike Rogue

Spike Rogue enters the battlefield with two +1/+1 counters on it.
{2}, Remove a +1/+1 counter from Spike Rogue: Put a +1/+1 counter on target creature.
{2}, Remove a +1/+1 counter from a creature you control: Put a +1/+1 counter on Spike Rogue.

Carnophage

At the beginning of your upkeep, tap Carnophage unless you pay 1 life.

Survival of the Fittest

{G}, Discard a creature card: Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Thopter Squadron

Flying
Thopter Squadron enters the battlefield with three +1/+1 counters on it.
{1}, Remove a +1/+1 counter from Thopter Squadron: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only as a sorcery.
{1}, Sacrifice another Thopter: Put a +1/+1 counter on Thopter Squadron. Activate only as a sorcery.

Predatory Hunger

Enchant creature
Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature.

Forest

Manabond

At the beginning of your end step, you may reveal your hand and put all land cards from it onto the battlefield. If you do, discard your hand.

Keeper of the Beasts

{G}, {T}: Choose target opponent who controlled more creatures than you did as you activated this ability. Create a 2/2 green Beast creature token.

Recurring Nightmare

Sacrifice a creature, Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Reclaim

Put target card from your graveyard on top of your library.

Spike Cannibal

Spike Cannibal enters the battlefield with a +1/+1 counter on it.
When Spike Cannibal enters the battlefield, move all +1/+1 counters from all creatures onto it.

Keeper of the Dead

{B}, {T}: Choose target opponent who had at least two fewer creature cards in their graveyard than you did as you activated this ability. Destroy target nonblack creature that player controls.

Swamp

City of Traitors

When you play another land, sacrifice City of Traitors.
{T}: Add {C}{C}.

Culling the Weak

As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.

Spike Weaver

Spike Weaver enters the battlefield with three +1/+1 counters on it.
{2}, Remove a +1/+1 counter from Spike Weaver: Put a +1/+1 counter on target creature.
{1}, Remove a +1/+1 counter from Spike Weaver: Prevent all combat damage that would be dealt this turn.