Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Kazandu Blademaster 
Creature — Human Soldier Ally · 1/1 · Uncommon · Zendikar · #16
First strike, vigilance
Whenever this creature or another Ally you control enters, you may put a +1/+1 counter on this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $4.49 at Card Kingdom
One ruling from Wizards of the Coast
- 1 October 2009This ability triggers on this creature entering, so it will enter with its unmodified power and toughness, and then receive a +1/+1 counter a short time later. It does not enter with the +1/+1 counter already on it.