Mortred, Phantom Assassin

Whenever Mortred, Phantom Assassin attacks,
roll a d20
1-9 | Mortred, Phantom Assassin gets +2/+0
until end of turn.
10-14 | Mortred, Phantom Assassin gets +2/+0
and first strike until end of turn.
15-17 | Mortred, Phantom Assassin gets +2/+0,
first strike and shroud until end of turn.
18-20 | Triple Mortred, Phantom Assassin's
power until end of turn. She gains double strike
and shroud until end of turn.