For each player, you choose from among permanents that player controls an artifact, a creature, an enchantment, and a planeswalker. Then each player sacrifices all other nonland permanents he or she controls.
Flying, vigilance T: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.
When you cast Artisan of Kozilek, you may return target creature card from your graveyard to the battlefield. Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
Look at the top card of your library. You may put that card into your graveyard. Draw a card.
Whenever you cast an artifact spell, investigate. (Create a Clue token. It's an artifact with "2, Sacrifice this artifact: Draw a card.") Activated abilities of artifacts you control cost 1 less to activate. This effect can't reduce the mana in that cost to less than one mana.
Threshold — Krosan Beast gets +7/+7 as long as seven or more cards are in your graveyard.
When Aria of Flame enters the battlefield, each opponent gains 10 life. Whenever you cast an instant or sorcery spell, put a verse counter on Aria of Flame, then it deals damage equal to the number of verse counters on it to target player or planeswalker.
Strive — Solidarity of Heroes costs 1G more to cast for each target beyond the first. Choose any number of target creatures. Double the number of +1/+1 counters on each of them.
Flying When Rekindling Phoenix dies, create a 0/1 red Elemental creature token with “At the beginning of your upkeep, sacrifice this creature and return target card named Rekindling Phoenix from your graveyard to the battlefield. It gains haste until end of turn.” 4/3
Whenever you discard a creature card, put a +1/+1 counter on Surly Badgersaur. Whenever you discard a land card, create a Treasure token. (It’s an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”) Whenever you discard a noncreature, nonland card, Surly Badgersaur fights up to one target creature you don’t control. 3/3
Firespout deals 3 damage to each creature without flying if {R} was spent to cast this spell and 3 damage to each creature with flying if {G} was spent to cast this spell. (Do both if {R}{G} was spent.)
{2}{B}, Sacrifice a creature: Each other player sacrifices a creature. {2}{R}, Sacrifice an artifact: Each other player sacrifices an artifact. {2}{G}, Sacrifice an enchantment: Each other player sacrifices an enchantment. 3/3
Each player hides at least one item, then all players reveal them simultaneously. Each player loses life equal to the number of items they revealed. The player who revealed the fewest items then loses half their life, rounded up. If two or more players are tied for fewest, each loses half their life, rounded up.
Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle. Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Create thirteen tapped 2/2 black Zombie creature tokens. Flashback {7}{B}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)