Sword of War and Peace
Artifact — Equipment
Equipped creature gets +2/+2 and has protection from red and from white.
Whenever equipped creature deals combat damage to a player, this Equipment deals damage to that player equal to the number of cards in their hand and you gain 1 life for each card in your hand.
Equip 
Chris Rahn
Double Masters (2XM)
• #300Rulings
You count the cards in the each player's hand when the triggered ability resolves.
(wotc • 2011-06-01)
Rulings
You count the cards in the each player's hand when the triggered ability resolves.
(wotc • 2011-06-01)