Just double the pledge for 2 rewards, just triple for 3 and so on. I.e. if you wanted 3 sets on our first set tier it'd be $30 since the tier starts at $10. Shipping and handling will be collected at a later time!
Yes! For every set you back on day 1, you'll be able to select an equal amount of bonus dice at the end of the campaign. i.e. if you back 3 sets, you'll be able to select 3 bonus dice at the end of the campaign!
Just pledge for the reward tier that you'd like and then add $2 for each additional dice. I.e. if you pledged for tier 1 to get a single set of dice and wanted 6 extra d20s you would pledge: $10 + $12 = $22 total.