At the end of your turn: Each opponent that controls more creatures than you sacrifices a creature.
Card Color: Green
Rootband Ring
If first in turn Opens colors Black+Green. When created: you may sacrifice 1 card in play, if you did each opponent sacrifices 1 card in play.
Eranor of Thornveil
Mastery 2. When created: Destroy target creature or target building
Rootwarden Manor
Mastery 1. (When created: Play 1 face down cards from the top of your deck, as 1 power token creatures.) At end of your turn: You may sacrifice 1 creature in play, then each opponent sacrifices a creature.
Rootshade House
Trap. (On opponent’s turn: Stop and discard a card before it is played, this Trap is sacrificed.) Stop next creature card. When created: Draw 1 card.
Thicketwatch Cottage
If first in turn Opens colors Black+Green. Growth 1, Trap. Stop next creature card (L2-). When created: Each opponent discards 1 card.
Thornveil, Black Forest
Dark, Mastery 1. At end of your turn: You may sacrifice a card in play. If you did Draw 1 card + Deal 1 damage to each opponent.
Arkana
While on Hero Zone: At end of your turn: Opponents discard 1 card if they control more creatures than you. Indestructible.
Zerath Branchfort
Dark, Push. At end of your turn: Look at your face down cards, you may select one that is the type “Creature” and flip it face up.
Unar, The Veilrunner
When created: You may sacrifice 1 card in play, then each opponent sacrifices a creature. While in play: Opponents may only play 3 cards each turn.