Forum:Slifer and Dreadroot

If you control Slifer the Sky Dragon and The Wicked Dreadroot how will it affect Slifer's ATK? Will it still change with the number of cards in your hand and will it still be 1000 x the number of cards in your hand or just 500 x the number of cards in your hand?--DarkMastero (talk • contribs) 23:58, December 29, 2015 (UTC)