C14: Wolfcaller's Howl, Enchantment 3G At the beginning of your upkeep, create X 2/2 green Wolf creature tokens, where X is the number of your opponents...

Wolfcaller's Howl

At the beginning of your upkeep, create X 2/2 green Wolf creature tokens, where X is the number of your opponents with four or more cards in hand.

11/7/2014 Use the number of opponents who have four or more cards in hand as the ability resolves to determine the value of X.