Elsin, Elder Wood Guardian

Eminence - As Long as Elsin, Elder Wood
Guardian is in the command zone or on the battlefield, whenever another nonspirit elf dies,
create a 1/1 green and white elf spirit creature
token with flying.
Elsin's power and toughness are each equal to
the number of creatures you control.
Spirits you control get +1/+1 and are indestructible.