Threshold — As long as seven or more cards are in your graveyard, Hunting Grounds has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."
When Wormfang Turtle enters, exile a land you control.When Wormfang Turtle leaves the battlefield, return the exiled card to the battlefield under its owner's control.
Flying, trampleWhen Worldgorger Dragon enters, exile all other permanents you control.When Worldgorger Dragon leaves the battlefield, return the exiled cards to the battlefield under their owners' control.
At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice Planar Chaos.Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.
FlyingWhenever Treacherous Vampire attacks or blocks, sacrifice it unless you exile a card from your graveyard.Threshold — As long as seven or more cards are in your graveyard, Treacherous Vampire gets +2/+2 and has "When Treacherous Vampire dies, you lose 6 life."
FlyingPhantom Flock enters with three +1/+1 counters on it.If damage would be dealt to Phantom Flock, prevent that damage. Remove a +1/+1 counter from Phantom Flock.
Lava Dart deals 1 damage to any target.Flashback—Sacrifice a Mountain. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
FlyingWhen Wormfang Drake enters, sacrifice it unless you exile a creature you control other than Wormfang Drake.When Wormfang Drake leaves the battlefield, return the exiled card to the battlefield under its owner's control.
Create two 1/1 white Bird creature tokens with flying.Flashback—Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
When Wormfang Newt enters, exile a land you control.When Wormfang Newt leaves the battlefield, return the exiled card to the battlefield under its owner's control.
