Originally from the Lorwyn set, Evoke is a keyword ability that allows you to pay a different cost altogether
Gonna Counterspell or do you feel lucky? Can You Respond to a Spell or Ability After Your Opponent Has Chosen Targets
Deadly Dispute Deadly Dispute is one of the better sacrifice outlets, allowing you to get cards and Treasure
A lot of fetch lands require you to pay life in order to use them, and by doing so, you are expediting your low life gameplan Gain 1 Life Life gain decks and life matter cards will greatly benefit from the fetch lands that gain you life when used
Ramp decks have to accelerate to be good
The first of the two is Lord Xander, whose three abilities for 4BUR are not to be underestimated in their value one opponent discards half of his or her hand (rounded down), mills half of his or her library (rounded down) or sacrifices half of his or her permanents, this hits in almost every game