Eldrazi Ruiner

Each turn before your untap step you may create
a 0/1 Eldrazi scion creature token. Each turn
before your untap step you may roll a 20 sided
die, whatever number it lands on is added to
your life total.Each turn before your untap
step you may roll a 10 sided die,whatever number
it lands on is subtracted from your opponents life
total. Each turn before your untap step if you
have more than 50 life this card gains
indestructible, flying and gains +20/+20 .
(This happens each turn and stacks)