Bow of the Skulker Rogue

Whenever a creature with flying enters the battlefield, roll a d20.
1-9 | Equipped creature deals damage equal to its
power to target creature.
10-20 | Equipped creature deals damage equal to
two times its power to target creature. Excess
damage is dealt to that creature's owner
Equipped creature gets +1/+2 and has reach.
Equip to green creature {g}
Equip {3}