Deoxys, Virus Invasor

{b}:You can pay any amount of life. Deoxys,
Virus Invasor gains the following abilities based
on how much life you paid with this effect.
1-3: This card gains +1/+1.
3-7: This card gains: "Ward—Sacrifice a creature".
8-12: This card gains an additional +4/+4 and
trample.
13-17: This card gains indestructible and flying.
20: This card gains an additional +5/+5 and annihilator 4.