Gaea's Avenger

Gaea's Avenger's power and toughness are each equal to 1 plus the number of artifacts your opponents control.

Sylvan Yeti

Sylvan Yeti's power is equal to the number of cards in your hand.

Nafs Asp

Whenever Nafs Asp deals damage to a player, that player loses 1 life at the beginning of their next draw step unless they pay {1} before that draw step.

Citanul Druid

Whenever an opponent casts an artifact spell, put a +1/+1 counter on Citanul Druid.

Wormwood Treefolk

{G}{G}: Wormwood Treefolk gains forestwalk until end of turn and deals 2 damage to you. (It can't be blocked as long as defending player controls a Forest.)
{B}{B}: Wormwood Treefolk gains swampwalk until end of turn and deals 2 damage to you. (It can't be blocked as long as defending player controls a Swamp.)

Nimble Mongoose

Shroud (This creature can't be the target of spells or abilities.)
Threshold — Nimble Mongoose gets +2/+2 as long as seven or more cards are in your graveyard.

Aboroth

Cumulative upkeep—Put a -1/-1 counter on Aboroth. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Traproot Kami

Defender; reach (This creature can block creatures with flying.)
Traproot Kami's toughness is equal to the number of Forests on the battlefield.

Niall Silvain

{G}{G}{G}{G}, {T}: Regenerate target creature.

Permeating Mass

Whenever Permeating Mass deals combat damage to a creature, that creature becomes a copy of Permeating Mass.

Taunting Elf

All creatures able to block Taunting Elf do so.

Mwonvuli Ooze

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay {2} for each age counter on it.)
Mwonvuli Ooze's power and toughness are each equal to 1 plus twice the number of age counters on it.

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.

Spike Drone

Spike Drone enters the battlefield with a +1/+1 counter on it.
{2}, Remove a +1/+1 counter from Spike Drone: Put a +1/+1 counter on target creature.

Elvish Handservant

Whenever a player casts a Giant spell, you may put a +1/+1 counter on Elvish Handservant.

Scryb Sprites

Bayou Dragonfly

Flying; swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Collector Ouphe

Activated abilities of artifacts can't be activated.

Aisling Leprechaun

Whenever Aisling Leprechaun blocks or becomes blocked by a creature, that creature becomes green. (This effect lasts indefinitely.)

Gorilla Berserkers

Trample; rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)
Gorilla Berserkers can't be blocked except by three or more creatures.

Deepwood Drummer

{G}, {T}, Discard a card: Target creature gets +2/+2 until end of turn.

Jungle Lion

Lichenthrope

If damage would be dealt to Lichenthrope, put that many -1/-1 counters on it instead.
At the beginning of your upkeep, remove a -1/-1 counter from Lichenthrope.

Feral Thallid

At the beginning of your upkeep, put a spore counter on Feral Thallid.
Remove three spore counters from Feral Thallid: Regenerate Feral Thallid.

Floral Spuzzem

Whenever Floral Spuzzem attacks and isn't blocked, you may destroy target artifact defending player controls. If you do, Floral Spuzzem assigns no combat damage this turn.

Ana Disciple

{U}, {T}: Target creature gains flying until end of turn.
{B}, {T}: Target creature gets -2/-0 until end of turn.

People of the Woods

People of the Woods's toughness is equal to the number of Forests you control.

Charging Badger

Thallid

At the beginning of your upkeep, put a spore counter on Thallid.
Remove three spore counters from Thallid: Create a 1/1 green Saproling creature token.

Argothian Pixies

Argothian Pixies can't be blocked by artifact creatures.
Prevent all damage that would be dealt to Argothian Pixies by artifact creatures.