Radioactive Dice

Button Notation:	%
BMO Notation:	%

If a Radioactive Die is either the attacking die or the target die in an attack with a single attacking die and a single target die, replace the attacking die with two dice as equal as available with sides equaling the size of the attacking die. For example, a %d10 would split into two d5s if available. If not, it would split into a d4 and d6; a d5 would split into a d2 and d3.

Radioactive Dice were invented by Magnus Mårtensson (aka NoopMan) on the original Button Men Online site.