Bandit, Backstabbing Rogue

Bandit, Backstabbing Rogue enters the battlefield
with 1 {e} on it.
If Bandit, Backstabbing Rogue has less than 3 {e} on it during your upkeep, put 1 {e} on it.
When Bandit, Backstabbing Rogue deals combat
damage to a creature or a player, remove any
number of {e} from it.
Add +2/+0 until the end of the turn for each {e} removed this way.
When Bandit, Backstabbing Rogue has no {e}, it has -3/-0 and shroud.