Piyrra

Whenever another nontoken creature you control
dies, put a +1/+1 counter on Piyrra.
{t}: You gain X life, where X is Piyrra's power.
Sacrifice Piyrra: Until your next turn, your life
total can't change and you gain protection from everything. All permanents you control phase
out. (While they're phased out, they're treated as
though they don't exist. They phase in before
you untap during your untap step.)