Energy Storm

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Prevent all damage that would be dealt by instant and sorcery spells.
Creatures with flying don't untap during their controllers' untap steps.

Masters Edition II

Cumulative upkeep {1}
Prevent all damage that would be dealt by instant and sorcery spells.
Creatures with flying don't untap during their controller's untap step.

Pro Tour Collector Set

Ice Age

Cumulative Upkeep: o1
Damage dealt by instants, interrupts, and sorceries is reduced to 0.
Creatures with flying do not untap during their controller's untap phase.