Here goes ...

Henry Pym
Version: Sizeable Scientist
Team: Avengers
F/R: No/No
Cost: 4
ATK/DEF: 7/7

When Henry Pym attacks or is attacked by a character with a cost of 5 or greater, and it is not a team attack, Henry Pym gets +2x/+2x where x is equal to the characters cost minus 4.

When Henry Pym attacks or is attacked by a character with a cost of 3 or less, and it is not a team attack, Henry Pym gets -2x/-2x where x is equal to 4 minus the characters cost.

"No job too big, no job too small."

Just thought it would be cool to have him both reflect that Giant Man and Ant Man thing, he gets bigger or smaller and it's always a 'fair fight' [his stats follow the same 'curve' as Phat so that he's big against 2 and 3's, equal against 4 and 5, and a little outclassed against 6 and up ... but being able to attack up the curve with minimal pumping is cool].

Cool idea. The wording is maybe a little unwieldy but it's a great idea.

Very balanced to.

Good work.:)