Joven's Ferrets

Whenever Joven's Ferrets attacks, it gets +0/+2 until end of turn.
At end of combat, tap all creatures that blocked Joven's Ferrets this turn. They don't untap during their controller's next untap step.

Serra Paladin

{T}: Prevent the next 1 damage that would be dealt to any target this turn.
{1}{W}{W}, {T}: Target creature gains vigilance until end of turn.

Folk of An-Havva

Whenever Folk of An-Havva blocks, it gets +2/+0 until end of turn.

Trade Caravan

At the beginning of your upkeep, put a currency counter on Trade Caravan.
Remove two currency counters from Trade Caravan: Untap target basic land. Activate only during an opponent's upkeep.

Clockwork Gnomes

{3}, {T}: Regenerate target artifact creature.

Leaping Lizard

{1}{G}: Leaping Lizard gets -0/-1 and gains flying until end of turn.

Forest

Serrated Arrows

Serrated Arrows enters with three arrowhead counters on it.
At the beginning of your upkeep, if there are no arrowhead counters on Serrated Arrows, sacrifice it.
{T}, Remove an arrowhead counter from Serrated Arrows: Put a -1/-1 counter on target creature.

Root Spider

Whenever Root Spider blocks, it gets +1/+0 and gains first strike until end of turn.

Serra Bestiary

Enchant creature
At the beginning of your upkeep, sacrifice Serra Bestiary unless you pay {W}{W}.
Enchanted creature can't attack or block, and its activated abilities with {T} in their costs can't be activated.

Mesa Falcon

Flying
{1}{W}: Mesa Falcon gets +0/+1 until end of turn.

Plains

Willow Faerie

Serra Inquisitors

Whenever Serra Inquisitors blocks or becomes blocked by one or more black creatures, Serra Inquisitors gets +2/+0 until end of turn.

Aysen Bureaucrats

{T}: Tap target creature with power 2 or less.

Abbey Matron

{W}, {T}: Abbey Matron gets +0/+3 until end of turn.

Hungry Mist

At the beginning of your upkeep, sacrifice Hungry Mist unless you pay {G}{G}.

Willow Priestess

{T}: You may put a Faerie permanent card from your hand onto the battlefield.
{2}{G}: Target green creature gains protection from black until end of turn.

Clockwork Steed

Clockwork Steed enters with four +1/+0 counters on it.
Clockwork Steed can't be blocked by artifact creatures.
At end of combat, if Clockwork Steed attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on Clockwork Steed. This ability can't cause the total number of +1/+0 counters on Clockwork Steed to be greater than four. Activate only during your upkeep.