Gravestorm

Gravestorm
Keyword Ability
Type	Triggered
Introduced	Future Sight
Last used	Future Sight
Reminder Text	Gravestorm (When you cast this spell, put a copy of it onto the stack for each permanent that was put into a graveyard from battlefield this turn. If the spell has any targets, you may choose new targets for any of the copies.)
Statistics	1 card 100%
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keyword:"Gravestorm"

Gravestorm is a triggered keyword ability. It's similar to storm, except that instead of counting the number of spells played that turn, it counts the number of permanents put into a graveyard from play that turn. Gravestorm was introduced in Future Sight and has only been printed on one card so far, the timeshifted Bitter Ordeal. According to Mark Rosewater, it is is unlikely to be reused.