Thunderstaff

As long as this artifact is untapped, if a creature would deal combat damage to you, prevent 1 of that damage.
{2}, {T}: Attacking creatures get +1/+0 until end of turn.

Jort the Thunder-Mad spent his life perfecting a way to harness the power of the heavens.

Commander Anthology

As long as Thunderstaff is untapped, if a creature would deal combat damage to you, prevent 1 of that damage.
{2}, {T}: Attacking creatures get +1/+0 until end of turn.

Commander 2013

As long as Thunderstaff is untapped, if a creature would deal combat damage to you, prevent 1 of that damage.{2}, {T}: Attacking creatures get +1/+0 until end of turn.

Duel Decks: Mirrodin Pure vs. New Phyrexia

Archenemy

If Thunderstaff is untapped and a creature would deal combat damage to you, prevent 1 of that damage.
{2}, {T}: Attacking creatures get +1/+0 until end of turn.

Darksteel

If Thunderstaff is untapped, it prevents 1 damage from each creature, each time it would deal combat damage to you. So if three creatures with double strike attack you and aren’t blocked, Thunderstaff will prevent a total of 6 damage.