One-shot effect

One-shot effects are effects which do not last for an extended period of time. 
==Rules==
==Examples==
Some examples of one-shot effects include the following:
*Direct damage or burn, characterized by the card <c>Lightning Bolt</c>
*Lifegain, characterized by <c>Healing Salve</c>
*Land destruction, as represented by cards such as <c>Sinkhole</c>
*Fast mana sources, such as <c>Dark Ritual</c> or <c>Seething Song</c>
*Creature removal in the forms of <c>Terror</c> and <c>Swords to Plowshares</c>
==Cantrips==
Some of these one-shot effects also "replace" themselves in the form of cantrips. Often, a card will have a slightly heightened mana cost in exchange for the phrase "Draw a card" in the spell's text box. This allows little to no loss, and even the possibility of gaining card advantage and tempo.
==Slowtrips==
Slowtrips are merely delayed cantrips that were introduced in Ice Age and Coldsnap. While they do not have the "immediate" effect of a cantrip, they still allow the card being played to replace itself. The text associated with a slowtrip is "Draw a card at the beginning of the next turn's upkeep."