Altair, Blade of Justice

Stealth: If Altair is wielding a weapon, he has hexproof.

Arsenal Mastery: At the beginning of your upkeep, you
may search your library for a Weapon, reveal it, and put
it into your hand. If you do, shuffle your library.

Deadly Precision: Whenever Altair deals combat damage
to a player, destroy target creature that player controls.

Exclusive Armament: Altair, Blade of Justice can't wield
more than one Weapon at a time. If he switches
Weapons, unattach the previous weapon.