Hellsing, Rogue Traitor

Flying, protection from zombies and skeletons
Whenever Hellsing attacks with another creature,
he gets +4/+0 and can only be blocked by two or
more creatures.
Flip a coin: If you win the flip, Hellsing deals 5
damage to target creature. If you lose, tap Hellsing.
You may only activate this ability once per turn.
My real name is...