World Champion's Text:

E Commit: If this attack deals damage, your next attack this turn gets +X Damage and you draw 1 card. X equals 4 minus the control of the attack preceding this one in your card pool.

Question: If you use this ehance but you don't have another attack in your card pool, do you get a damage a damage bonus of 4? If not why not, because 4 minus "the control of the attack preceding this one" would undefine and revert to zero. Thanks

i dont know how to argue for or against this issue, but it looks to be the way you said

You would simply draw one card. The damage boost effect has a caluclation that cannot be solved (4 - Unkown) and as such fizzles.

Baranor said:

This. When you said there is no card so that the previous control defaults to zero you were close...but on any equation that is missing a piece (such as a removed card, no referenced card present, etc) the end result defaults to zero, not the specific variable

Smazzurco said:

*DOUBLESTAMP*