Deathrite Shaman The infamous 1-mana planeswalker, life loss is arguably the second most vital of Deathrite Shamans abilities, right behind the mana ability that makes excellent use of fetch lands
Tergrids Lantern CMC: 3(B) Type: Legendary Artifact Rarity: Rare Ability: (Tap) Target player loses three life unless they sacrifice a nonland permanent or discard a card
Jeskai Fires A dangerous deck when its namesake is in play, this combination uses Fires of Invention to set up explosive turns with Cavalier of Gales , Cavalier of Flame , and other significant threats
Toxic is the same as poisonous, which appeared on two cards from Future Sight , just developed with a new name, more cards, and the right context
Mishra is a way more aggressive character, while Urzas plans are more convoluted and confusing