Elf on the Hungry Wolf

Lifelink
This creature have +1/+1 if you have more
than 20 life.
This creature have also +1/+1 and Vigilance if
you have more than 25 life
This creature have also +0/+2 and First Strike if
you have more than 30 life.
This creature have +1/+1 and Lifelink 2 instead
of Lifelink if you have less than 5 life