Alvaro, King of the Elves

Alvaro, King of the Elves' power is equal to the
number of creatures you control.
When Alvaro, King of the Elves attacks, create a
1/1 white elf soldier creature token.
{w}: Create a 1/1 white elf soldier creature token.
{g}{g}{t}: Gain X life, where X is Alvaro, King of
the Elves' power