Zameck Guildmage

Oracle Text

GU: This turn, each creature you control enters the battlefield with an additional +1/+1 counter on it.

GU, Remove a +1/+1 counter from a creature you control: Draw a card.

Card Rulings

1/24/2013 Zameck Guildmage’s first ability is cumulative. For example, if it resolves twice in a turn, each creature that enters the battlefield under your control that turn will do so with two +1/+1 additional counters on it.
1/24/2013 Zameck Guildmage’s first ability has no effect on creatures already on the battlefield when it resolves.