Lacerator as weapon for DTailer?

I was wondering how a TS\DTail assassin would work out, using Lacerator as her main weapon? The idea would be that she Tiger Strikes with the Lacerator so that nearby enemies should be amp'd by the time Tiger Strike is charged up. I figure that for an enemy with 50% res (the norm for hell), Amp triples the physical damage done to the monster, and by extension, the amount of fire damage in the AOE radius. Even if the monster had no physical resistance, the damage is doubled. Furthermore, very few monsters have unbreakable physical immunities, so with the aid of a merc weilding infinity, there would be almost nothing she couldn't handle.

Is there any other main hand weapon that comes anywhere close to doubling or tripling damage output for the dtailer as well as taking care of about 50% of her immunity issues?|||Pretty sure amp damage only affects physical damage, and that TS only affects the phys damage of the kick...|||it scares monsters away.. and brand is great for amp, but sacrifices a bit of safety(and generates fury from some of the local brains here ).