Level 1

Level 4

Level 7

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Level 20

your next backstab have less CD (or no CD).your poison makes healing on the target less effective (?%).increase shadowstep range.poison spreads to nearby enemies.while preparation is active your first basic attack on the target enemy hero deal +5% of it's max health as damage, 10% from behind.you can hide in enemy structures, gaining a lot vision on the area.killing an enemy hero with backstab gives you permanent 3% ability power.after using an ability your next basic attack deal bonus damage.if you use shadowstep before backstab, your backstab drain mana from the enemy hero.if you use deadly poison before backstab, your backstab steal health from the enemy.if you use shadow step in the last 2 seconds of preparation, you gain movment speed bonus.increase your attack speed for a short time.backstab deal half damage, but if shadowstep used before backstab deal 4x dmg from behind, without shadowstep it does double damage from behind.you add more poison on your daggers in the last 2 seconds of deadly poison duration. Dealing a backstab to the target during this time stun the target for 1 second.backstab an enemy, than using shadowstep gives you a shield. You can use shadowstep an allied heroes and can store 5 stack of shield, which reduce the next incoming damage by 50%.using preparation and shadowstep before backstab, refresh the CD of shadowstep.use preparation and deadly poison, than your backstab cause the target to vulnerable (35%).throw knifes around you, slow enemies.using Vanish during preparation and your attacks wont break the invisibility.using Disarm during preparation and the enemy's weapon land on the ground. After the disarm duration the hero have to pick up it's weapon. After a short time the realm lord give the weapon back to the hero.deadly poison stay on the target for 30 seconds.while preparation is on, you dodge 100% incoming damage, decaying to 50% at the end.