Cheapest priced copy (Gatecrash): $0.49 at Card Kingdom, near mint, their price list as of .
Zameck Guildmage 
Creature — Elf Wizard · 2/2 · Uncommon · Gatecrash Promos · #209
{G}{U}: This turn, each creature you control enters with an additional +1/+1 counter on it.
{G}{U}, Remove a +1/+1 counter from a creature you control: Draw a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| RNA Guild Kit | 129 | Uncommon | $0.59 | — |
| Gatecrash | 209 | Uncommon | $0.49 | $4.49 |
| Gatecrash Promos | 209 | Uncommon | $1.29 | — |
2 rulings from Wizards of the Coast
- 24 January 2013Zameck Guildmage's first ability has no effect on creatures already on the battlefield when it resolves.
- 24 January 2013Zameck Guildmage's first ability is cumulative. For example, if it resolves twice in a turn, each creature that enters under your control that turn will do so with two +1/+1 additional counters on it.