Simple Q&A D&D 4e Thread 3

[Sol]

A 38B

Tegu answered your main question correctly, but I am worried about this bolded bit in your question:

As a Vampire, you automatically get the at-will power at level one. It has a special effect saying that you can use it as a melee basic attack. I am pretty sure this means that you can use it for opportunity attacks as well as add the damage of the thing that you are using to make the attack with (e.g. fists, rapier etc.)

Vampire Slam is an implement attack which deals 1d10+dex modifier damage, even if you use it as a melee basic attack.

Since it lacks the weapon keyword, you cannot use a weapon to make this attack, unless you can use that weapon as an implement. Please note that this does not mean that you can't describe the attack as coming from a weapon.

Since it lacks a [W] placeholder, you cannot use your weapon's damage die as part of the damage roll of this attack, even if you are using a weapon as the implement for this power.