When Demon of Dark Schemes enters the battlefield, all other creatures get -2/-2 until end of turn.
Whenever another creature dies, you get(an energy counter).
, Pay : Put target creature card from a graveyard onto the battlefield under your control tapped.
9/20/2016 The set of creatures affected by Demon of Dark Schemes’s first triggered ability is determined as the ability resolves. Creatures that enter the battlefield later in the turn and noncreature permanents that become creatures later in the turn won’t get -2/-2.
9/20/2016 Demon of Dark Schemes’s second triggered ability triggers whenever another creature dies for any reason, not just due to the first triggered ability.
9/20/2016 If Demon of Dark Schemes dies at the same time as another creature, its second triggered ability triggers.
9/20/2016 If a creature’s owner leaves the game after you’ve put that creature onto the battlefield with Demon of Dark Schemes’s last ability, the creature leaves with that player. If you leave the game before that player, the creature is exiled.
2/9/2017 is the energy symbol. It represents one energy counter.
2/9/2017 Energy counters are a kind of counter that a player may have. They’re not associated with specific permanents. (Other kinds of counters that players may have include poison and experience.)
2/9/2017 Keep careful track of how many energy counters each player has. You may do so by keeping a running count on paper, by using a die, or by any other clear and mutually agreeable method.
2/9/2017 If an effect says you get one or more , you get that many energy counters. To pay one or more , you lose that many energy counters. Any effects that interact with counters a player gets, has, or loses can interact with energy counters.
2/9/2017 Energy counters aren’t mana. They don’t go away as steps, phases, and turns end, and effects that add mana “of any type” to your mana pool can’t give you energy counters.
2/9/2017 You can’t pay more energy counters than you have.