Coststorm

Coststorm is a triggered keyword ability that first appeared on the Mystery Booster 2 test card . 
==Description==
Coststorm is similar to storm, except that instead of counting the number of spells cast during a turn, it counts the number of unique mana values played. The mechanic includes lands as all lands (except ) have a mana value of zero.
Because it only appears on a test card, coststorm in not featured in the Comprehensive Rules.
==Examples==
==See also==
*Gravestorm
*Storm
Category:Test cards