Other Elf creatures you control get +1/+1.
: Add to your mana pool for each Elf you control.
10/1/2009 Elvish Archdruid’s first ability affects only other Elves you control. However, Elvish Archdruid’s second ability counts all Elves you control — including itself.
9/22/2011 Elvish Archdruid’s activated ability is a mana ability. It doesn’t use the stack and players can’t respond to it.