It checks the number of cards in your hand at the beginning of upkeep and does not trigger at all if you have more than three. It checks again on resolution and does not deal damage unless you still have 3 or fewer cards.
04-10-2004
wotc
You target one opposing player each time the ability triggers.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.